mq: fix qcommit documentation wrt --mq option

hgext/mq.py

@@ -1931,7 +1931,7 b' def clone(ui, source, dest=None, **opts)'
 def commit(ui, repo, *pats, **opts):
     """commit changes in the queue repository (DEPRECATED)
 
-    This command is deprecated; use hg --mq commit instead."""
+    This command is deprecated; use hg commit --mq instead."""
     q = repo.mq
     r = q.qrepo()
     if not r: