Reverse accidental deletion of changelog entry

Author: mjang

content/nginx-one/changelog.md

@@ -40,6 +40,8 @@ You can now import and export your Staged Configs from the UI and with our APIs.
 
 ### Manage RBAC access with namespaces
 
+We have added support for namespaces in N1C. You can now:
+
 - Manage resources in isolation in different namespaces.
 - Configure granular user permission controls base on namespace.