minor: errant character

Author: Sam Kleinman

source/tutorial/configure-sharded-cluster-balancer.txt

@@ -33,7 +33,7 @@ migrate chunks, as described in the following procedures:
 The :program:`mongos` instances user their own local timezones to when
 respecting balancer window.
 
-.. _sharded-cluster-config-default-chunk-size:q
+.. _sharded-cluster-config-default-chunk-size:
 
 Configure Default Chunk Size
 ----------------------------