chore: Update headlines

Author: Techassi

modules/ROOT/partials/release-notes/release-22.11.adoc

@@ -9,7 +9,7 @@ This is the third release of the Stackable Data Platform, which this time focuse
 
 The following new major platform features were added:
 
-CPU and memory limits configurable::
+===== CPU and memory limits configurable
 
 The operators now https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/[request] resources from Kubernetes for the products and required CPU and memory can now also be configured for all products.
 If your product instances are less performant after the update, the new defaults might be set too low and we recommend to xref:kafka:usage-guide/storage-resources.adoc[set custom requests] for your cluster.
@@ -24,7 +24,7 @@ If your product instances are less performant after the update, the new defaults
 * https://github.com/stackabletech/airflow-operator/pull/167[Apache Airflow]
 * https://github.com/stackabletech/superset-operator/pull/273[Apache Superset]
 
-Orphaned Resources::
+===== Orphaned Resources
 
 The operators now properly clean up after scaling down products.
 This means for example deleting StatefulSets that were left over after scaling down.
@@ -37,7 +37,7 @@ This means for example deleting StatefulSets that were left over after scaling d
 * https://github.com/stackabletech/trino-operator/pull/310[Trino]
 * https://github.com/stackabletech/airflow-operator/pull/174[Apache Airflow]
 
-New Versions::
+===== New Versions
 
 New product versions are supported.
 
@@ -47,7 +47,7 @@ New product versions are supported.
 * https://github.com/stackabletech/druid-operator/pull/317[Apache Druid 24.0.0]
 * https://github.com/stackabletech/airflow-operator/pull/179[Apache Airflow 2.4.1]
 
-Product features::
+===== Product features
 
 Additionally there are some individual product features that are noteworthy
 

modules/ROOT/partials/release-notes/release-22.6.adoc

@@ -13,37 +13,37 @@ While we are very proud of this release it is our first one and we'll add new fe
 
 ==== Platform features
 
-Easily install production ready data applications::
+===== Easily install production ready data applications
 
 Using a familiar declarative approach, users can easily install data applications such as Apache Kafka or Trino across multiple cloud Kubernetes providers or on their own data centers.
 The installation process is fully automated while also providing the flexibility for the user to tune relevant aspects of each application.
 
-Monitoring::
+===== Monitoring
 
 All products have monitoring with prometheus enabled.
 xref:operators:monitoring.adoc[Learn more]
 
-Service discovery::
+===== Service discovery
 
 Products on the Stackable platform use service discovery to easily interconnect with each other.
 xref:concepts:service_discovery.adoc[Learn more]
 
-Configuration overrides::
+===== Configuration overrides
 
 All operators support configuration overrides, these are documented in the specific operator documentation pages.
 
-Common S3 configuration::
+===== Common S3 configuration
 
 Many products support connecting to S3 to load and/or store data.
 There is a common resource for S3 connections and buckets across all operators that can be reused.
 xref:concepts:s3.adoc[Learn more]
 
-Roles and role groups::
+===== Roles and role groups
 
 To support hybrid hardware clusters, the Stackable platform uses the concept of role groups.
 Services and applications can be configured to maximize hardware efficiency.
 
-Standardized::
+===== Standardized
 
 Learn once reuse everywhere.
 We use the same conventions in all our operators.

modules/ROOT/partials/release-notes/release-22.9.adoc

@@ -10,7 +10,7 @@ The main features focus on OpenShift support and security.
 
 The following new major platform features were added:
 
-OpenShift compatibility::
+===== OpenShift compatibility
 
 We have made continued progress towards OpenShift compability, and the following operators can now be previewed on OpenShift.
 Further improvements are expected in future releases, but no stability or compatibility guarantees are currently made for OpenShift clusters.
@@ -20,15 +20,15 @@ Further improvements are expected in future releases, but no stability or compat
 * https://github.com/stackabletech/hdfs-operator/pull/225[Apache HDFS]
 * https://github.com/stackabletech/spark-k8s-operator/pull/126[Apache Spark on K8s]
 
-Support for internal and external TLS::
+===== Support for internal and external TLS
 
 The following operators support operating the products at a maximal level of transport security by using TLS certificates to secure internal and external communication:
 
 * https://github.com/stackabletech/trino-operator/pull/244[Trino]
 * https://github.com/stackabletech/kafka-operator/pull/442[Apache Kafka]
 * https://github.com/stackabletech/zookeeper-operator/pull/479[Apache ZooKeeper]
 
-LDAP authentication::
+===== LDAP authentication
 
 Use a central LDAP server to manage all of your user identities in a single place.
 The following operators added support for LDAP authentication:

modules/ROOT/partials/release-notes/release-23.1.adoc

@@ -20,7 +20,7 @@ The focus in this platform release is on the support of offline (or on-premise)
 
 The following new major platform features were added:
 
-Product image selection::
+===== Product image selection
 
 Product image selection has been expanded to cover different scenarios:
 
@@ -32,7 +32,7 @@ These options are described in more detail xref:contributor:adr/ADR023-product-i
 
 *N.B.* this is a breaking change across all operators as `spec.version` has been replaced by `spec.image`.
 
-Logging Aggregation::
+===== Logging Aggregation
 
 Component activity within the platform is logged in a way that makes it difficult to find, persist and consolidate this information.
 Log configuration is also a challenge.
@@ -47,19 +47,19 @@ In this release this has been added to the following components:
 
 Support for other products will be added in future releases.
 
-New Versions::
+===== New Versions
 
 The following new product version is now supported:
 
 * https://github.com/stackabletech/trino-operator/pull/358[Trino 403]
 
-Deprecated Versions::
+===== Deprecated Versions
 
 The following product version is no longer supported:
 
 * https://github.com/stackabletech/druid-operator/pull/339[Druid 0.22.1]
 
-Product features::
+===== Product features
 
 Additionally, there are some individual product features that are noteworthy
 

modules/ROOT/partials/release-notes/release-23.11.adoc

@@ -11,45 +11,45 @@ Released 2023-11-30.
 
 The following new major platform features were added:
 
-PodDisruptionBudgets::
+===== PodDisruptionBudgets
 Kubernetes has mechanisms to ensure minimal planned downtime.
 Our product operators deploy so-called PodDisruptionBudget (PDB) resources alongside the products.
 For every role that you specify (e.g. HDFS namenodes or Trino workers) a PDB is created.
 This will determine the extent to which roles for a given application may be inactive at any given time.
 See xref:concepts:operations/pod_disruptions.adoc[the documentation] for more details.
 
-Graceful shutdown::
+===== Graceful shutdown
 Graceful shutdown refers to the managed, controlled shutdown of service instances in the manner intended by the software authors.
 Typically, an instance will receive a signal indicating the intent for the server to shut down, and it will initiate a controlled shutdown.
 Our operators configure a sensible amount of time Pods are granted to properly shut down without disrupting the availability of the product.
 See xref:concepts:operations/graceful_shutdown.adoc[the documentation] for more details.
 
-Signed SDP product images::
+===== Signed SDP product images
 As of this release all Stackable product images are signed (the signing of operator images was delivered in SDP 23.7).
 Please see this xref:guides:enabling-verification-of-image-signatures.adoc[tutorial] for more information.
 
-Airflow KubernetesExecutor::
+===== Airflow KubernetesExecutor
 Airflow clusters can now be configured to use Kubernetes executors, whereby pods are spun up for job tasks and terminated when complete, thus offering an alternative way to use resources without the need for job queuing.
 
-Overridable Java security settings::
+===== Overridable Java security settings
 For JVM-based products (i.e. Druid, HBase, HDFS, Hive, Kafka, NiFi, Spark, Trino and ZooKeeper) it is now possible to provide custom security settings that override the default values.
 This allows the user to control things such as DNS lookup caches.
 
-Stackable Cockpit::
+===== Stackable Cockpit
 This release includes a very early preview version of Stackable Cockpit, a browser-based management tool which interacts with the Stackable data platform to display e.g. deployed stacklets and their status.
 
-stackablectl::
+===== stackablectl
 Our command line tool has been re-worked to use the same backbone as Stackable Cockpit: you can find out about the recent enhancements by visiting the online xref:management:stackablectl:index.adoc[documentation].
 
-Listener operator::
+===== Listener operator
 The listener-operator was introduced in release 23.1 and the associated ServiceType field in 23.4.
 In this release we introduce configurable ListenerClass _presets_ that map to the service types appropriate for different environments.
 This is discussed in more detail in the xref:listener-operator:listenerclass.adoc[documentation].
 
-Openshift certification::
+===== Openshift certification
 All Stackable operators in the 23.11 release have been certified for Openshift versions 4.11-4.13 and can be installed directly from the OperatorHub UI: image:openshift_operatorhub.png[OperatorHub in Openshift portal]
 
-Product features::
+===== Product features
 
 Additionally, there are some other individual product features that are noteworthy:
 

modules/ROOT/partials/release-notes/release-23.4.adoc

@@ -29,19 +29,19 @@ It is recommended to install <<Release 23.4.1>> instead, as it contains relevant
 
 The following new major platform features were added:
 
-Cluster Operation::
+===== Cluster Operation
 
 The first part of xref:concepts:operations/cluster_operations.adoc[Cluster operations] was rolled out in every applicable Stackable Operator.
 This supports pausing the cluster reconciliation and stopping the cluster completely.
 Pausing reconciliation will not apply any changes to the Kubernetes resources (e.g. when changing the custom resource).
 Stopping the cluster will set all replicas of StatefulSets, Deployments or DaemonSets to zero and therefore result in the deletion of all Pods belonging to that cluster (not the PVCs).
 
-Status Field::
+===== Status Field
 
 Operators of the Stackable Data Platform create, manage and delete Kubernetes resources: in order to easily query the health state of the products - and react accordingly - Stackable Operators use several predefined condition types to capture different aspects of a product's availability.
 See this xref:contributor:adr/ADR027-status[ADR] for more information.
 
-Default / Custom Affinities::
+===== Default / Custom Affinities
 
 In Kubernetes there are different ways to influence how Pods are assigned to Nodes.
 In some cases it makes sense to co-locate certain services that communicate a lot with each other, such as HBase regionservers with HDFS datanodes.
@@ -50,29 +50,29 @@ There may also be additional requirements e.g. placing important services - such
 This release implements default affinities that should suffice for many scenarios out-of-the box, while also allowing for custom affinity rules at a role and/or role-group level.
 See this xref:contributor:adr/ADR026-affinities.adoc[ADR] for more information.
 
-Log Aggregation::
+===== Log Aggregation
 
 The logging framework (added to the platform in Release 23.1) offers a consistent custom resource configuration and a separate, persisted sink (defaulting to OpenSearch).
 This has now been rolled out across all products.
 See this xref:contributor:adr/adr025-logging_architecture[ADR] and this xref:concepts:logging.adoc[concepts page] for more information.
 
-Service Type::
+===== Service Type
 
 The Service type can now be specified in all products.
 This currently differentiates between the internal ClusterIP and the external NodePort and is forward compatible with the xref:listener-operator:listenerclass.adoc[ListenerClass] for the automatic exposure of Services via the Listener Operator.
 This change is not backwards compatible with older platform releases.
 For security reasons, the default is set to the cluster-internal (ClusterIP) ListenerClass.
 A cluster can be exposed outside of Kubernetes by setting clusterConfig.listenerClass to external-unstable (NodePort) or external-stable (LoadBalancer).
 
-New Versions::
+===== New Versions
 
 No new product versions are supported in this platform release.
 
-Deprecated Versions::
+===== Deprecated Versions
 
 No product versions have been deprecated in this platform release.
 
-Product features::
+===== Product features
 
 Additionally, there are some individual product features that are noteworthy:
 

modules/ROOT/partials/release-notes/release-23.7.adoc

@@ -11,14 +11,14 @@ Released on 2024-07-25.
 
 The following new major platform features were added:
 
-Resource Quotas::
+===== Resource Quotas
 
 Explicit resources are now applied to all containers, for both operators and products.
 This allows running the Stackable Data Platform on Kubernetes clusters with a ResourceQuota or LimitRange set.
 Where these are not specified directly, defaults will be used.
 See https://github.com/stackabletech/issues/issues/368[this issue] for more information.
 
-Pod Overrides::
+===== Pod Overrides
 
 It is now possible to add custom settings which specify elements of a pod template (Service, StatefulSet etc.) on roles or rolegroups, which the operator then merges with the objects it writes before actually applying them.
 This provides the user with a possibility for specifying any property that can be set on a regular Kubernetes Pod, but which is not directly exposed via the Stackable custom resource definition.
@@ -41,17 +41,17 @@ For example, with HDFS:
                     cpu: 410m
 ```
 
-Openshift certification::
+===== Openshift certification
 
 OLM bundles - a pre-requisite for the Openshift certification process - have been created for each operator.
 All 15 SDP operators in release 23.4.1 are now Openshift-certified and deployable directly from within an Openshift cluster.
 
-Signed SDP operator images::
+===== Signed SDP operator images
 
 As of this release all Stackable operator images are signed (this feature will be added to product images in a subsequent release).
 More information about this, including how to verify the image signatures, can be found in this xref:guides:enabling-verification-of-image-signatures.adoc[guide].
 
-New Versions::
+===== New Versions
 
 The following new product versions are now supported:
 
@@ -65,7 +65,7 @@ The following new product versions are now supported:
 * https://github.com/stackabletech/trino-operator/pull/423[Trino: 414]
 * https://github.com/stackabletech/zookeeper-operator/pull/689[ZooKeeper: 3.8.1]
 
-Deprecated Versions::
+===== Deprecated Versions
 
 The following product versions are deprecated and will be removed in a later release:
 
@@ -82,11 +82,11 @@ The following product versions are deprecated and will be removed in a later rel
 * Trino: 377, 387, 395, 396, 403
 * Zookeeper: 3.5.8, 3.6.3, 3.7.0, 3.8.0
 
-Removed Versions::
+===== Removed Versions
 
 No product versions have been removed.
 
-Product features::
+===== Product features
 
 Additionally, there are some individual product features that are noteworthy: