Update automatic-extension-upgrade.md

auto ext upgrades work on rest api, az cli, and powershell examples.

updated ms.date
-------
cc: @cynthn

Author: ericd-mst-github

articles/virtual-machines/automatic-extension-upgrade.md

@@ -5,7 +5,8 @@ ms.service: virtual-machines
 ms.subservice: extensions
 ms.workload: infrastructure
 ms.topic: how-to
-ms.date: 08/10/2021
+ms.reviewer: erd
+ms.date: 12/28/2022
 ms.custom: devx-track-azurepowershell
 
 ---