Tweaked TOC

Author: KumarVivek

powerapps-docs/maker/TOC.yml

@@ -14,7 +14,7 @@
       href: ../learning-catalog/get-started.md
     - name: Business Decision Maker
       href: ../learning-catalog/bdm.md
-    - name: Application maker
+    - name: App maker
       href: ../learning-catalog/app-maker.md
     - name: Developer
       href: ../learning-catalog/developer.md