Fix broken links

Author: Minnie Liu

articles/communication-services/quickstarts/media-composition/define-media-composition.md

@@ -438,6 +438,6 @@ In this section you learned how to:
 
 You may also want to:
  - Learn about [media composition concept](../../concepts/voice-video-calling/media-comp.md)
- - Get started on [media composition](./get-started-media-comp.md)
+ - Get started on [media composition](./get-started-media-composition.md)
 
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