Update font-size of LI's in Docs to jive better with normal text

This updates the `font-size` of `<li>` tags in the Documentation section, which are currently smaller than the normal text.

**Old:**

![](http://f.cl.ly/items/453z0j1z3D3U0m3f1202/SNAG_Program-0044.png)

**New:**

![](http://f.cl.ly/items/141U2Y021g160S333H0k/SNAG_Program-0043.png)