Merge branch 'mk/add-link-to-how-to-get-a-console-on-tracking-database' into 'master'

Geo: Add link to how to get a console on tracking database

Closes gitlab#12342

See merge request gitlab-org/omnibus-gitlab!3864

doc/maintenance/README.md

@@ -135,7 +135,9 @@ server.
 Similar to the previous command, if you need superuser access to the bundled
 Geo tracking database (`geo-postgresql`), you can use the `gitlab-geo-psql`.
-It takes the same arguments as the regular `psql` command.
+It takes the same arguments as the regular `psql` command. For HA, see more
+about the necessary arguments in:
+[Checking Configuration](https://docs.gitlab.com/ee/administration/geo/replication/troubleshooting.html#checking-configuration)
 ```shell
 # Superuser psql access to GitLab's Geo tracking database