changing one word

Author: Bob Grabar

source/tutorial/expand-replica-set.txt

@@ -26,7 +26,7 @@ Requirements
 
 If neither of these conditions are satisfied, please use the MongoDB
 :ref:`installation tutorial <tutorials-installation>` and the
-:doc:`/tutorial/deploy-replica-set` guide instead.
+:doc:`/tutorial/deploy-replica-set` tutorial instead.
 
 Procedures
 ----------