Update dsc-credentials.md

freshness review, updated metadata tags
-------
cc: @bobbytreed

Author: ericd-mst-github

articles/virtual-machines/extensions/dsc-credentials.md

@@ -6,8 +6,9 @@ ms.service: virtual-machines
 ms.subservice: extensions
 author: bobbytreed
 ms.author: robreed
+ms.reviewer: erd
 ms.collection: windows
-ms.date: 05/02/2018
+ms.date: 03/06/2023
 ms.custom: devx-track-azurepowershell
 
 ---