CHANGES.rst: Document new endpoint /pending

Author: gflohr

CHANGES.rst

@@ -13,6 +13,7 @@ New Features
 - Add CSS variables for better organization and flexibility (`#1001`_, pkvach)
 - Add support for comment search by Thread URL in admin interface (`#1020`_, pkvach)
 - Add sorting option for comments (`#1005`_, pkvach)
+- Add server API endpoint /pending for moderation queue (gflohr)
 
 .. _#966: https://github.com/posativ/isso/pull/966
 .. _#998: https://github.com/isso-comments/isso/pull/998