remove reserved attribute: document_id

Author: 928PJY

articles/media-services/video-indexer/index.yml

@@ -2,7 +2,6 @@
 documentType: LandingData
 title: Azure Media Services Video Indexer Documentation
 metadata:
-  document_id: 
   title: Azure Media Services Video Indexer Documentation | Microsoft Docs
   description: Learn about Video Indexer.
   services: media-services