Do not advertise git:// in docs

Author: jasagredo

doc/version-control-fields.rst

@@ -64,7 +64,7 @@ The location of the repository, usually a URL but the exact form of this field
 depends on the repository type. For example:
 
 -  for Darcs: ``http://code.haskell.org/foo/``
--  for Git: ``git://github.com/foo/bar.git``
+-  for Git: ``https://github.com/foo/bar.git``
 -  for CVS: ``[email protected]:/cvs``
 
 VCS branch