Update vpn-gateway-sample-vnet-vnet-powershell.md

Author: anzaman

articles/vpn-gateway/scripts/vpn-gateway-sample-vnet-vnet-powershell.md

@@ -8,7 +8,7 @@ author: anzaman
 ms.service: vpn-gateway
 ms.devlang: powershell
 ms.topic: sample
-ms.date: 04/30/2018
+ms.date: 01/09/2020
 ms.author: alzam
 
 ---