Update toc.yml

Author: niels9001

hub/apps/design/toc.yml

@@ -87,15 +87,15 @@ items:
     - name: Design your app for bidirectional text
       href: globalizing/design-for-bidi-text.md
     - name: In-app help
-          items:
-            - name: Guidelines for app help
-              href: in-app-help/guidelines-for-app-help.md
-            - name: Instructional UI
-              href: in-app-help/instructional-ui.md
-            - name: In-app help
-              href: in-app-help/in-app-help.md
-            - name: External help
-              href: in-app-help/external-help.md   
+      items:
+        - name: Guidelines for app help
+          href: in-app-help/guidelines-for-app-help.md
+        - name: Instructional UI
+          href: in-app-help/instructional-ui.md
+        - name: In-app help
+          href: in-app-help/in-app-help.md
+        - name: External help
+          href: in-app-help/external-help.md
     - name: Widgets
       items:
         - name: Overview