Update broken link

README.rst

@@ -31,7 +31,7 @@ Features
 * Workflow support
 * An extensible `form builder <http://docs.wagtail.io/en/latest/form_builder.html>`_
 * Multi-site and multi-language support
-* Optional `static site generation <http://docs.wagtail.io/en/latest/contrib_components/static_site_generation.html>`_
+* Optional `static site generation <http://docs.wagtail.io/en/latest/reference/contrib/staticsitegen.html>`_
 * Excellent `test coverage <https://coveralls.io/r/torchbox/wagtail?branch=master>`_
 
 Find out more at `wagtail.io <http://wagtail.io/>`_.