message: docs: add guide for cover usage
diff: @@ -158,6 +158,11 @@ you do that!
  ![](https://patternplate.github.io/media/images/screenshot-widgets-demo.svg)
  +## Up next
  +
  +* [Guide: Convince with a cover](./doc/docs/guides/cover?guides-enabled=true)
  +
  +
  ## Related topics
  * [Documentation](./doc/docs/reference/documentation?reference-enabled=true)
  