Update extension upgrade tutorial doc

With the addition of the CRD Upgrade Safety preflight check, our
existing example of upgrading argocd from 0.5.0 to 0.6.0 no longer
serves as a good example. This commit changes the example to use an
update from 0.2.0 to 0.2.1 which no longer fails the CRD Upgrade check,
and also doesn't violate our restriction on automatic upgrades between
minor versions with a major version of 0.

Signed-off-by: Tayler Geiger <[email protected]>

Author: trgeiger

docs/tutorials/upgrade-extension.md

@@ -11,16 +11,16 @@ For information on downgrading an extension, see [Downgrade an Extension](downgr
 
 ## Prerequisites
 
-* You have an extension installed
+* You have a ClusterExtension installed
 * The target version is compatible with OLM v1 (see [OLM v1 limitations](../project/olmv1_limitations.md))
-* CRD compatibility between the versions being upgraded or downgraded (see [CRD upgrade safety](../concepts/crd-upgrade-safety.md))
-* The installer service account's RBAC permissions are adequate for the target version (see [Minimal RBAC for Installer Service Account](../howto/derive-service-account.md))
+* Any changes to the CustomResourceDefinition in the new version meet compatibility requirements (see [CRD upgrade safety](../concepts/crd-upgrade-safety.md))
+* The installer ServiceAccount's RBAC permissions are adequate for the target version (see [Minimal RBAC for Installer Service Account](../howto/derive-service-account.md))
 
 For more detailed information see [Upgrade Support](../concepts/upgrade-support.md).
 
 ## Procedure
 
-Suppose we have successfully created and installed v0.5.0 of the ArgoCD operator with the following `ClusterExtension`:
+Suppose we have successfully created and installed v0.2.0 of the ArgoCD operator with the following `ClusterExtension`:
 
 ``` yaml title="Example CR"
 apiVersion: olm.operatorframework.io/v1
@@ -35,7 +35,7 @@ spec:
     sourceType: Catalog
     catalog:
       packageName: argocd-operator
-      version: 0.5.0
+      version: 0.2.0
 ```
 
 * Update the version field in the ClusterExtension resource:
@@ -54,7 +54,7 @@ spec:
         sourceType: Catalog
         catalog:
           packageName: argocd-operator
-          version: 0.6.0 # Update to version 0.6.0
+          version: 0.2.1 # Update to version 0.2.1
     EOF
     ```
 
@@ -66,27 +66,14 @@ spec:
     Alternatively, you can use `kubectl patch` to update the version field:
 
     ``` terminal
-    kubectl patch clusterextension <extension_name> --type='merge' -p '{"spec": {"source": {"catalog": {"version": "<target_version>"}}}}'
-    ```
-
-    `extension_name`
-    : Specifies the name defined in the `metadata.name` field of the extension's CR.
-
-    `target_version`
-    : Specifies the version to upgrade or downgrade to.
-
-    For example:
-    ``` terminal
-    kubectl patch clusterextension argocd --type='merge' -p '{"spec": {"source": {"catalog": {"version": "0.6.0"}}}}'
+    kubectl patch clusterextension argocd --type='merge' -p '{"spec": {"source": {"catalog": {"version": "0.2.1"}}}}'
     ```
 
     !!! success
         ``` text title="Example output"
         clusterextension.olm.operatorframework.io/argocd patched
         ```
 
-### Verification
-
 * Verify that the Kubernetes extension is updated:
 
     ``` terminal