correct broken HTML in footer

@camd r?

**Before**
![Before](https://cloud.githubusercontent.com/assets/26739/2909871/317139d4-d639-11e3-86f8-07be32c1979b.png)

**After**
![After](https://cloud.githubusercontent.com/assets/26739/2909874/37bdf8b8-d639-11e3-892e-69f174e68e0a.png)