Update index.yml

Author: Juliako

articles/media-services/previous/index.yml

@@ -1,7 +1,7 @@
 ### YamlMime:Landing
 
 title: Azure Media Services v2 (legacy)
-summary: No new features or functionality are being added to Media Services v2. Check out the latest version, Media Services v3. 
+summary: No new features are being added to Media Services v2. Check out the latest version, Media Services v3. 
 
 metadata:
   title: Azure Media Services v2 documentation