fix link that points to its own section

Author: Bob Grabar

source/core/replication.txt

@@ -81,7 +81,7 @@ Failover
 Replica sets feature automated failover. If the :term:`primary`
 goes offline or becomes unresponsive and a majority of the original
 set members can still connect to each other, the set will elect a new
-primary. For details, see :ref:`replica-set-failover`
+primary. For details, see :ref:`replica-set-failover-administration`.
 
 .. index:: replica set; elections
 .. index:: failover; elections