Update TOC.yml

Adjusting TOC for ARM horizontal 
https://review.docs.microsoft.com/en-us/help/contribute/contribute-how-to-write-resource-manager-quickstart?branch=master

Author: JasonWHowell

articles/azure-app-configuration/TOC.yml

@@ -21,8 +21,9 @@
           href: quickstart-azure-functions-csharp.md
         - name: Java Spring
           href: quickstart-java-spring-app.md
-        - name: Azure Resource Manager template
+        - name: ARM template
           href: quickstart-resource-manager.md
+          displayName: ARM, azure resource manager template
     - name: Feature management
       items:
         - name: ASP.NET Core