Document the html5lib modification in Vendoring docs
@@ -100,8 +100,9 @@ Modifications
* ``setuptools`` is completely stripped to only keep ``pkg_resources``
* ``pkg_resources`` has been modified to import its dependencies from ``pip._vendor``
* ``packaging`` has been modified to import its dependencies from ``pip._vendor``
-* ``html5lib`` has been modified to import six from ``pip._vendor`` and
- to prefer importing from ``collections.abc`` instead of ``collections``.
+* ``html5lib`` has been modified to import six from ``pip._vendor``, to prefer
+ importing from ``collections.abc`` instead of ``collections`` and does not import
+ ``xml.etree.cElementTree`` on Python 3.
* ``CacheControl`` has been modified to import its dependencies from ``pip._vendor``
* ``requests`` has been modified to import its other dependencies from ``pip._vendor``
and to *not* load ``simplejson`` (all platforms) and ``pyopenssl`` (Windows).
