In the documentation for difflib.HtmlDiff.__init__ there's a couple of references to ``ndiff()``. I believe these should be modified to :func:`ndiff` (as used elsewhere in the difflib documentation) so that they get nicely hyperlinked in the HTML documentation.

See e.g. https://docs.python.org/2/library/difflib.html#difflib.HtmlDiff.__init__ and https://docs.python.org/3/library/difflib.html#difflib.HtmlDiff.__init__
where 'ndiff()' isn't hyperlinked, and https://docs.python.org/3/library/difflib.html#difflib.restore where 'ndiff()' *is* hyperlinked.