Update docs/how-to-guides/new-user-guides/kubernetes-clusters-in-ranc…

…her-setup/register-existing-clusters.md

Co-authored-by: Lucas Saintarbor <[email protected]>

docs/how-to-guides/new-user-guides/kubernetes-clusters-in-rancher-setup/register-existing-clusters.md

@@ -296,7 +296,8 @@ This section lists some of the most common errors that may occur when importing
 ### AKS
 
 #### Error: Getting static credential is not allowed because this cluster is set to disable local accounts.
-
+  ```sh
+  Error: Getting static credential is not allowed because this cluster is set to disable local accounts.
   To resolve this issue, enable local accounts before attempting to [import the cluster](#registering-a-cluster) again.
 
     ```sh