Fix typo to be consistent with API docs - Closes #2904

Steve Piercy

2017-01-20 da004dacca884d6e015e4b7d7ccf5ec8f4edff39

Fix typo to be consistent with API docs
- Closes #2904

 docs/narr/hooks.rst

@@ -160,7 +160,7 @@

   def main(globals, **settings):
       config = Configurator()
       config.add_forbidden_view(forbidden_view)
       config.add_forbidden_view(forbidden)

If instead you prefer to use decorators and a :term:`scan`, you can use the
:class:`pyramid.view.forbidden_view_config` decorator to mark a view callable