[doc] Fix broken link
Closes-Bug:
@@ -304,8 +304,7 @@ The standard installation uses a non-encrypted HTTP channel.
The service catalog configuration in the Identity service determines
whether a service appears in the Dashboard.
- For the full listing, see `Horizon Settings and Configuration
- <https://docs.openstack.org/developer/horizon/topics/settings.html>`_.
+ For the full listing, see :ref:`install-settings`.
#. Restart the Apache HTTP Server.
