Add index links to guides/data-binding, guides/custom-controls

Author: ScrubN

sidebars.js

@@ -250,6 +250,10 @@ const sidebars = {
         {
           'type': 'category',
           'label': 'Data Binding',
+          'link': {
+            'type': 'doc',
+            'id': 'guides/data-binding/index',
+          },
           'items': [
             'guides/data-binding/inotifypropertychanged',
             'guides/data-binding/binding-classes',
@@ -306,6 +310,10 @@ const sidebars = {
         {
           'type': 'category',
           'label': 'Custom Controls',
+          'link': {
+            'type': 'doc',
+            'id': 'guides/custom-controls/index',
+          },
           'items': [
             'guides/custom-controls/types-of-control',
             'guides/custom-controls/create-a-custom-panel',