contrib/release/py: fix the 'v' character in commit message

Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>

contrib/helpers.py

@@ -83,7 +83,7 @@ class Git(object):
 
     @staticmethod
     def commit(msg):
-        cmd = shlex.split("git commit -s -m 'v{}'".format(msg))
+        cmd = shlex.split("git commit -s -m '{}'".format(msg))
         return run(cmd).decode(ENCODING)
 
     @staticmethod

contrib/release.py

@@ -394,7 +394,7 @@ class Release(object):
     def make(self):
         Git.add('offlineimap/__init__.py')
         Git.add('Changelog.md')
-        commitMsg = "{}\n".format(newVersion)
+        commitMsg = "v{}\n".format(newVersion)
         for tester in self.testers.getListOk():
             commitMsg = "{}\nTested-by: {} {}".format(
                 commitMsg, tester.getName(), tester.getEmail()