Add ms.service

Author: gitName

learn-pr/azure/get-started-with-object-interaction/index.yml

@@ -7,6 +7,7 @@ metadata:
   author: Sean-Kerawala
   ms.author: lolab
   ms.topic: module
+  ms.service: hololens
 title: Getting started with 3D object interaction
 summary: Learn to manipulate and interact with 3D objects
 abstract: |