docs: update community info with channel links (#2403)

website/static/admin/config.yml

@@ -44,6 +44,27 @@ collections: # A list of collections the CMS should be able to edit
       - {label: "Twitter Image", name: "twitter_image", widget: "image"}
       - {label: "Date", name: "date", widget: "date"}
       - {label: "Body", name: "body", widget: "markdown"}
+  - name: community
+    label: Community
+    file: website/content/pages/community.md
+    preview_path: "community"
+    fields:
+      - {label: Title, name: title}
+      - {label: Headline, name: headline}
+      - {label: Subheading, name: subhead}
+      - label: Sections
+        name: sections
+        widget: list
+        fields:
+          - {name: title, label: Title}
+          - name: channels
+            label: Channels
+            widget: list
+            fields:
+              - {name: title, label: Title}
+                {name: url, label: URL}
+                {name: description, label: Description}
+
   - name: updates
     label: Updates
     files: