Change filenames to use underscores

doc/administration/disaster_recovery/bring-primary-back.md → doc/administration/disaster_recovery/bring_primary_back.md

@@ -26,7 +26,7 @@ If you have lost your original primary, follow the
 
 ### Promote the secondary to primary
 
-When initial replication is complete and the primary and secondary are closely in sync you can do a [Planned Failover](planned-fail-over.md)
+When initial replication is complete and the primary and secondary are closely in sync you can do a [Planned Failover](planned_fail_over.md)
 
 ### Restore the secondary node
 

doc/administration/disaster_recovery/index.md

@@ -23,7 +23,7 @@ immediately after following these instructions.
 ### Step 1. Allow replication to finish if possible
 
 If the secondary is still replicating data from the primary, follow
-[the Planned Failover doc](planned-fail-over.md) as closely as possible in
+[the Planned Failover doc](planned_fail_over.md) as closely as possible in
 order to avoid unnecessary data loss.
 
 ### Step 2. Permanently disable the primary

doc/gitlab-geo/README.md

@@ -53,7 +53,7 @@ improving speed for distributed teams
 custom integrations and internal workflows
 - Quickly fail-over to a Geo secondary in a
 [Disaster Recovery](../administration/disaster_recovery/index.md) scenario
-- Allows [planned fail-over](../administration/disaster_recovery/planned-fail-over.md) to a Geo secondary
+- Allows [planned fail-over](../administration/disaster_recovery/planned_fail_over.md) to a Geo secondary
 
 ## Architecture
 

doc/gitlab-geo/bring-primary-back.md

-This document was moved to [another location](../administration/disaster_recovery/bring-primary-back.md).
+This document was moved to [another location](../administration/disaster_recovery/bring_primary_back.md).

doc/gitlab-geo/planned-failover.md

-This document was moved to [another location](../administration/disaster_recovery/planned-fail-over.md).
+This document was moved to [another location](../administration/disaster_recovery/planned_fail_over.md).