[Docs] Fix references

Some references were lost in the rewrite of content.
We should point to the appropriate new content in those references.

Change-Id: Idcbccadfc104a4883149ea6c73ca5b50bac09841

doc/source/admin/backup-restore.rst

@@ -1,3 +1,5 @@
+.. _backup-restore:
+
 ==============================
 Back up and restore your cloud
 ==============================
@@ -26,4 +28,4 @@ Database backups and recovery
 MySQL data is available on the infrastructure nodes.
 You can recover databases, and rebuild the galera cluster.
 For more information, see
-:ref:`galera-cluster-maintenance`.
+:ref:`galera-cluster-recovery`.

doc/source/admin/maintenance-tasks/galera.rst

@@ -144,6 +144,8 @@ one of the nodes.
        wsrep_cluster_state_uuid  338b06b0-2948-11e4-9d06-bef42f6c52f1
        wsrep_cluster_status      Primary
 
+.. _galera-cluster-recovery:
+
 Galera cluster recovery
 ~~~~~~~~~~~~~~~~~~~~~~~
 

doc/source/admin/scale-environment.rst

@@ -14,7 +14,7 @@ needed in an environment, it is possible to create additional nodes.
 .. warning::
 
    Make sure you back up your current OpenStack environment
-   before adding any new nodes. See :ref:`backing-up` for more
+   before adding any new nodes. See :ref:`backup-restore` for more
    information.
 
 #. Add the node to the ``infra_hosts`` stanza of the

doc/source/reference/configuration/using-overrides.rst

@@ -1,3 +1,5 @@
+.. _user-overrides:
+
 Overriding default configuration
 ================================
 

doc/source/user/aio/quickstart.rst

@@ -160,7 +160,7 @@ Notes:
 
 The next step is to bootstrap Ansible and the Ansible roles for the
 development environment.  Deployers can customize roles by adding variables to
-override the defaults in each role (see :ref:`adding-galaxy-roles`).  Run the
+override the defaults in each role (see :ref:`user-overrides`).  Run the
 following to bootstrap Ansible:
 
 .. code-block:: shell-session