Fix link to Venusian docs

Steve Piercy

2017-06-27 93c9becf5cf4de05d885ddcc38cc4b5d0561cdd9

Fix link to Venusian docs

(cherry picked from commit 51498c4)

 docs/narr/hooks.rst

@@ -1059,8 +1059,8 @@
       server = make_server('0.0.0.0', 8080, app)
       server.serve_forever()

For full details, please read the `Venusian documentation
<http://docs.repoze.org/venusian>`_.
For full details, please read the :ref:`Venusian documentation <venusian:venusian>`.


.. _registering_tweens: