Update tutorial-create-managed-app-with-custom-provider.md

Author: RadoslavGatev

articles/azure-resource-manager/managed-applications/tutorial-create-managed-app-with-custom-provider.md

@@ -222,7 +222,7 @@ az account set --subscription <subscriptionID>
 az group create --name $resourceGroup --location eastus
 
 # Get object ID of your identity
-userid=$(az ad user show --upn-or-object-id [email protected] --query objectId --output tsv)
+userid=$(az ad user list --upn [email protected] --query [0].id --output tsv)
 # Get role definition ID for the Owner role
 roleid=$(az role definition list --name Owner --query [].name --output tsv)