split an article

Author: Juliako

articles/media-services/latest/TOC.yml

@@ -202,6 +202,7 @@
   - name: Migration from v2 to v3
     items:
     - name: v2 vs v3
+      displayName: migrate, v2 to v3
       href: media-services-v2-vs-v3.md
     - name: Migration guidance
       href: migrate-from-v2-to-v3.md