fix

Author: Cynthia Nottingham

articles/virtual-machines/windows/share-images-across-tenants.md

@@ -2,7 +2,8 @@
 title: Share gallery images across tenants in Azure 
 description: Learn how to share VM images across Azure tenants using Shared Image Galleries.
 author: cynthn
-s.service: virtual-machines-windows
+ms.service: virtual-machines-windows
+ms.subservice: imaging
 ms.workload: infrastructure-services
 ms.topic: iamging
 ms.date: 07/15/2019