[AMS] Change "region" to "location" in output string: az ams account sp create (#15664)

src/azure-cli/azure/cli/command_modules/ams/operations/sp.py

@@ -337,6 +337,7 @@ def _build_sp_result(subscription_id, location, resource_group_name, account_nam
         'SubscriptionId': subscription_id,
         'ServicePrincipalName': sp_name,
         'Region': location,
+        'Location': location,
         'ResourceGroup': resource_group_name,
         'Role': role,
         'AccountName': account_name,