fixes unclosed ul tag

/cc @Rosa-Fox, Wouldn't normally make a branch => pull request for so small a change, but this is just so you can see what merging a pull request looks like from the other side.

I've also committed a whitespace error here (at the bottom of the commit, that's the reason why you have the line with `</html>` on it needlessly removed and added). In real life I would fix this before sending a pull request :bear: