Version wording update for style

doc/administration/geo/disaster_recovery/index.md

@@ -99,7 +99,7 @@ must disable the **primary** node.
 Note the following when promoting a secondary:
 
 - If replication was paused on the secondary node (for example as a part of
-  upgrading, while you were running a version of GitLab lower than 13.4), you
+  upgrading, while you were running a version of GitLab earlier than 13.4), you
   _must_ [enable the node by using the database](../replication/troubleshooting.md#message-activerecordrecordinvalid-validation-failed-enabled-geo-primary-node-cannot-be-disabled)
   before proceeding.
 - A new **secondary** should not be added at this time. If you want to add a new