Merge branch 'maint'

* maint:
  git-clone: add missing comma in --reference documentation

Author: gitster

Documentation/git-clone.txt

@@ -84,7 +84,7 @@ its source repository, you can simply run `git repack -a` to copy all
 objects from the source repository into a pack in the cloned repository.
 
 --reference <repository>::
-	If the reference repository is on the local machine
+	If the reference repository is on the local machine,
 	automatically setup .git/objects/info/alternates to
 	obtain objects from the reference repository.  Using
 	an already existing repository as an alternate will