typo on 1.7 release notes

  :setting:`TEMPLATE_DEBUG` is ``True``. This allows template origins to be

  inspected and logged outside of the ``django.template`` infrastructure.

* ``TypeError`` exceptions are not longer silenced when raised during the

* ``TypeError`` exceptions are no longer silenced when raised during the

  rendering of a template.

* The following functions now accept a ``dirs`` parameter which is a list or