Fixing css inside tabs for developers profile

Fixing that:
![stof Christophe Coevoet KnpBundles](https://f.cloud.github.com/assets/77759/246822/cdd0941c-8ab0-11e2-8298-06e308bd4dfb.png)

Link : http://knpbundles.com/developer/stof/profile 
then click "Bundles I contribute to"