small fix to use the bulletproof font face syntax so IE9 wont get woff fonts

I noticed that IE9 got the woff font on http://www.webpagetest.org/result/140110_MC_BAW/1/details/

![screen shot 2014-01-10 at 21 58 50](https://f.cloud.github.com/assets/74497/1891357/b479d304-7a3b-11e3-931b-03b63d57c8bf.png)