Hugo: Update rbac.md (#8500)

Fix broken list, all items were numbered as 1.
Use the shortcode for note and warnings in the list.

content/en/docs/admin/authorization/rbac.md

@@ -764,7 +764,9 @@ In order from most secure to least secure, the approaches are:
 
     If an application does not specify a `serviceAccountName`, it uses the "default" service account.
 
-   **NOTE:** Permissions given to the "default" service account are available to any pod in the namespace that does not specify a `serviceAccountName`.
+    {{< note >}}**NOTE:** Permissions given to the "default" service
+    account are available to any pod in the namespace that does not
+    specify a `serviceAccountName`.{{< /note >}}
 
     For example, grant read-only permission within "my-namespace" to the "default" service account:
 
@@ -778,7 +780,9 @@ In order from most secure to least secure, the approaches are:
     Many [add-ons](/docs/concepts/cluster-administration/addons/) currently run as the "default" service account in the "kube-system" namespace.
     To allow those add-ons to run with super-user access, grant cluster-admin permissions to the "default" service account in the "kube-system" namespace.
 
-   **NOTE:** Enabling this means the "kube-system" namespace contains secrets that grant super-user access to the API.
+    {{< note >}}**NOTE:** Enabling this means the "kube-system"
+    namespace contains secrets that grant super-user access to the
+    API.{{< /note >}}
 
     ```shell
     kubectl create clusterrolebinding add-on-cluster-admin \
@@ -816,7 +820,9 @@ In order from most secure to least secure, the approaches are:
 
     If you don't care about partitioning permissions at all, you can grant super-user access to all service accounts.
 
-   **WARNING:** This allows any user with read access to secrets or the ability to create a pod to access super-user credentials.
+    {{< warning >}}**WARNING:** This allows any user with read access
+    to secrets or the ability to create a pod to access super-user
+    credentials.{{< /warning >}}
 
     ```shell
     kubectl create clusterrolebinding serviceaccounts-cluster-admin \