Fix broken link to logging docs

doc/development/logging.md

@@ -45,7 +45,7 @@ Note that currently on GitLab.com, any messages in `production.log` aren't
 indexed by Elasticsearch due to the sheer volume and noise. They
 do end up in Google Stackdriver, but it is still harder to search for
 logs there. See the [GitLab.com logging
-documentation](https://gitlab.com/gitlab-com/runbooks/blob/master/logging/doc/README.md)
+documentation](https://gitlab.com/gitlab-com/runbooks/-/tree/master/docs/logging)
 for more details.
 
 ## Use structured (JSON) logging