change `https://rawgit.com/richleland/pygments-css/master/manni.css` to `https://rawgit.com/richleland/pygments-css/master/monokai.css`
change
https://rawgit.com/richleland/pygments-css/master/manni.cssto
https://rawgit.com/richleland/pygments-css/master/monokai.css