overview for channels

Author: kephail

data/yaml/page-furniture/sidebar.yaml

@@ -51,8 +51,10 @@ items:
           - label: 'Messages'
             link: /docs/channels/messages
           - label: 'Channel options'
-            link: /docs/channels/options
+            link: ''
             items:
+              - label: Overview
+                link: /docs/channels/options
               - label: 'Rewind'
                 link: /docs/channels/options/rewind
               - label: 'Deltas'