[translate/translate] d2ccfd: Improve docstring

[Dwayne B. <dw...@tr...>]

  Branch: refs/heads/master
  Home:   https://github.com/translate/translate
  Commit: d2ccfd140287a04fb0961062aea186523cea1cdd
      https://github.com/translate/translate/commit/d2ccfd140287a04fb0961062aea186523cea1cdd
  Author: Dwayne Bailey <dw...@tr...>
  Date:   2012-04-25 (Wed, 25 Apr 2012)

  Changed paths:
    M translate/storage/versioncontrol/__init__.py

  Log Message:
  -----------
  Improve docstring