Add admonition type to shortcode (#9482)

* Change existing admon blocks

* Fix includes issue

content/en/docs/reference/access-authn-authz/extensible-admission-controllers.md

@@ -120,7 +120,7 @@ webhooks:
 ```
 
 {{< note >}}
-**Note:** When using `clientConfig.service`, the server cert must be valid for
+When using `clientConfig.service`, the server cert must be valid for
 `<svc_name>.<svc_namespace>.svc`.
 {{< /note >}}
 
@@ -132,7 +132,7 @@ After you create the webhook configuration, the system will take a few seconds
 to honor the new configuration.
 
 {{< note >}}
-**Note:** When the webhook plugin is deployed into the Kubernetes cluster as a
+When the webhook plugin is deployed into the Kubernetes cluster as a
 service, it has to expose its service on the 443 port. The communication
 between the API server and the webhook service may fail if a different port
 is used.
@@ -228,7 +228,7 @@ admission controller), or to inject defaults (e.g., the
 admission controller), etc.
 
 {{< note >}}
-**Note:** If your use case does not involve mutating objects, consider using
+If your use case does not involve mutating objects, consider using
 external admission webhooks, as they have better performance.
 {{< /note >}}