Update index.yml

Author: Juliako

articles/media-services/index.yml

@@ -42,9 +42,6 @@ highlightedContent:
     - title: Migrate Media Services v2 to v3
       itemType: concept
       url: ./latest/migrate-from-v2-to-v3.md      
-    - title: Azure Media Services specifications
-      itemType: concept
-      url: media-services-specifications-live-timed-metadata.md
     - title: Azure Media Player
       itemType: overview
       url: azure-media-player/azure-media-player-overview.md
@@ -110,7 +107,19 @@ conceptualContent:
           - url: ./latest/analyze-videos-tutorial-with-api.md
             itemType: tutorial
             text: Analyze videos            
-                     
+
+    - title: Learn about Media Services specifications
+      links:
+          - url: media-services-specifications-live-timed-metadata.md
+            itemType: concept
+            text: Timed Metadata in Live Streaming (RTMP & Smooth Streaming)
+          - url: media-services-specifications-ms-sstr-amendment-hevc.md
+            itemType: concept
+            text: Smooth Streaming protocol (MS-SSTR) amendment for HEVC
+          - url: media-services-fmp4-live-ingest-overview.md
+            itemType: concept
+            text:  Smooth Streaming ingest protocol             
+
 additionalContent:
   sections:
     - items: