fix kramdown nested list indentation

Requested changes from #1418, see [here for details](https://groups.google.com/forum/#!msg/knockoutjs/8MSJM6huGoI/jXzqEWeNTq0J)

The jQuery changes got picked up with I merged in gh-pages, but they should probably there anyway. Let me know if they need to come out.

You can see the changes live, [here](http://tyrsius.github.io/knockout/documentation/value-binding.html)