fix(guide) broken title overflow in navlist

## Before
![screen shot 2013-08-30 at 1 25 41 pm](https://f.cloud.github.com/assets/1016365/1060537/8829f31a-11b3-11e3-8620-9751954915f4.png)

## After
![screen shot 2013-08-30 at 1 25 31 pm](https://f.cloud.github.com/assets/1016365/1060540/8b6e9efe-11b3-11e3-8777-fa52f5236a74.png)