Update toc.yml

fixed typo

Author: alvin-l-han

articles/communication-services/toc.yml

@@ -1,8 +1,4 @@
-        {
-            "source_path": "articles/communication-services/concepts/voice-video-calling/media-streaming.md",
-            "redirect_url": "articles/communication-services/concepts/call-automation/audio-streaming-concept.md",
-            "redirect_document_id": true
-        }items:
+items:
 - name: Azure Communication Services documentation
   href: index.yml
 - name: Overview