Shorted new TOC entry

Author: ggailey777

articles/azure-functions/TOC.yml

@@ -756,7 +756,7 @@
                 - name: Output
                   href: functions-bindings-cosmosdb-v2-output.md
                   displayName: Azure Cosmos DB
-                - name: Migrate Azure Cosmos DB extension 3.x to 4.x
+                - name: Migrate version 3.x to 4.x
                   href: migrate-cosmos-db-version-3-version-4.md
                   displayName: Azure Cosmos DB
         - name: Azure Data Explorer