Add portal step and remove CLI-interactive

Author: b-branco

articles/private-5g-core/complete-private-mobile-network-prerequisites.md

@@ -152,10 +152,11 @@ To use Azure Private 5G Core, you need to register some additional resource prov
 
 You need to obtain the object ID (OID) of the custom location resource provider in your Azure tenant.  You will need to provide this OID when you configure your ASE to use AKS-HCI. You'll need to be an owner of your Azure subscription to obtain the OID.
 
+1. Sign in to the [Azure portal](https://portal.azure.com/).
 1. Sign in to [Azure Cloud Shell](../cloud-shell/overview.md) and select **Bash**.
 1. Retrieve the OID:
 
-    ```azurecli-interactive
+    ```azurecli
     az ad sp show --id bc313c14-388c-4e7d-a58e-70017303ee3b --query id -o tsv
     ```