minor wording change

Author: lilyjma

articles/azure-functions/durable/TOC.yml

@@ -39,7 +39,7 @@
     href: quickstart-netherite.md
   - name: Configure a storage provider - MSSQL
     href: quickstart-mssql.md
-  - name: Configure Durable Functions with managed identity
+  - name: Configure Durable Functions app with managed identity
     href: durable-functions-configure-managed-identity.md   
 - name: Tutorials
   items: