Update agent-windows.md

changed ms.date value for freshness review
-------
cc: @GabstaMSFT

Author: ericd-mst-github

articles/virtual-machines/extensions/agent-windows.md

@@ -7,7 +7,7 @@ ms.subservice: extensions
 ms.author: gabsta
 author: GabstaMSFT
 ms.collection: windows
-ms.date: 07/20/2019 
+ms.date: 02/27/2023 
 ms.custom: devx-track-azurepowershell
 ---