Changing links for Plugin management (#734)

Updated the links for plugin management reference content to reflect its
new location.

PR for moving content:
elastic/elasticsearch#124578
Task: #689

Author: charlotte-hoblik

deploy-manage/deploy/elastic-cloud/add-plugins-extensions.md

@@ -16,7 +16,7 @@ Plugins extend the core functionality of {{es}}. There are many suitable plugins
 * Analysis plugins, to provide analyzers targeted at languages other than English.
 * Scripting plugins, to provide additional scripting languages.
 
-Plugins can come from different sources: the official ones created or at least maintained by Elastic, community-sourced plugins from other users, and plugins that you provide. Some of the official plugins are always provided with our service, and can be [enabled per deployment](elasticsearch://reference/elasticsearch-plugins/cloud/ec-adding-elastic-plugins.md).
+Plugins can come from different sources: the official ones created or at least maintained by Elastic, community-sourced plugins from other users, and plugins that you provide. Some of the official plugins are always provided with our service, and can be [enabled per deployment](elasticsearch://reference/elasticsearch-plugins/plugin-management.md).
 
 There are two ways to add plugins to a hosted deployment in {{ecloud}}:
 

deploy-manage/tools/snapshot-and-restore/minio-on-premise-repository.md

@@ -65,7 +65,7 @@ How you create the AWS S3 bucket depends on what version of Elasticsearch you ar
 * For version 7.x:
 
     1. Using the Minio browser or an S3 client application, create an S3 bucket to store your snapshots.
-    2. [Log into the Cloud UI](../../deploy/cloud-enterprise/log-into-cloud-ui.md) and [add the S3 repository plugin](elasticsearch://reference/elasticsearch-plugins/cloud-enterprise/ece-add-plugins.md) to your cluster.
+    2. [Log into the Cloud UI](../../deploy/cloud-enterprise/log-into-cloud-ui.md) and [add the S3 repository plugin](elasticsearch://reference/elasticsearch-plugins/plugin-management.md) to your cluster.
 
 * For versions 8.0 and later, {{es}} has built-in support for AWS S3 repositories; no repository plugin is needed. Use the Minio browser or an S3 client application to create an S3 bucket to store your snapshots.
 

deploy-manage/users-roles/cluster-or-deployment-auth/kerberos.md

@@ -166,7 +166,7 @@ For detailed information of available realm settings, see [Kerberos realm settin
 
 ::::{tab-item} ECH and ECE
 
-1. Create a [custom bundle](elasticsearch://reference/elasticsearch-plugins/cloud-enterprise/ece-add-plugins.md) that contains your `krb5.conf` and `keytab` files, and add it to your cluster.
+1. Create a [custom bundle](elasticsearch://reference/elasticsearch-plugins/plugin-management.md) that contains your `krb5.conf` and `keytab` files, and add it to your cluster.
 
     :::{tip}
     You should use these exact filenames for {{ecloud}} to recognize the file in the bundle.

explore-analyze/machine-learning/nlp/ml-nlp-inference.md

@@ -117,7 +117,7 @@ PUT ner-test
 ```
 
 ::::{tip}
-To use the `annotated_text` data type in this example, you must install the [mapper annotated text plugin](elasticsearch://reference/elasticsearch-plugins/mapper-annotated-text.md). For more installation details, refer to [Add plugins provided with {{ech}}](elasticsearch://reference/elasticsearch-plugins/cloud/ec-adding-elastic-plugins.md).
+To use the `annotated_text` data type in this example, you must install the [mapper annotated text plugin](elasticsearch://reference/elasticsearch-plugins/mapper-annotated-text.md). For more installation details, refer to [Add plugins provided with {{ech}}](elasticsearch://reference/elasticsearch-plugins/plugin-management.md).
 ::::
 
 You can then use the new pipeline to index some documents. For example, use a bulk indexing request with the `pipeline` query parameter for your NER pipeline: