Fixed a small reST header glitch in docs/ref/templates/builtins.txt

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Other tags and filter libraries

===============================

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Django comes with a couple of other template-tag libraries that you have to

enable explicitly in your ``INSTALLED_APPS`` setting and enable in your

template with the ``{% load %}`` tag.

django.contrib.humanize

-----------------------

~~~~~~~~~~~~~~~~~~~~~~~

A set of Django template filters useful for adding a "human touch" to data. See

:ref:`ref-contrib-humanize`.

django.contrib.markup

---------------------

~~~~~~~~~~~~~~~~~~~~~

A collection of template filters that implement these common markup languages:

See :ref:`ref-contrib-markup`.

django.contrib.webdesign

------------------------

~~~~~~~~~~~~~~~~~~~~~~~~

A collection of template tags that can be useful while designing a website,

such as a generator of Lorem Ipsum text. See :ref:`ref-contrib-webdesign`.