Minor documentation fix for JIRA service

I noticed that the JIRA service documentation (and our dropdown service list) refers to Jira instead of JIRA.

![screen shot 2014-04-29 at 8 35 49 pm](https://cloud.githubusercontent.com/assets/121322/2837561/97fc2dc2-d01b-11e3-8fe7-5e29e4471637.png)