Sorry, there's nothing in the wiki yet. You probably want documentation, right? Why else would anyone want to use a crummy ol' wiki?
For an introduction, look at http://bitbucket.org/tgs/doctest-for-matlab/src#id1
Another possible source of information is the help string in http://bitbucket.org/tgs/doctest-for-matlab/src/tip/doctest.m
Thanks for being interested,