Fix Ruby's URL in the v2 cartridge

Before:

![screen shot 2013-06-13 at 9 59 11 am](https://f.cloud.github.com/assets/25666/650443/6e47f792-d45c-11e2-9e98-f888fe741516.png)

After:
![screen shot 2013-06-13 at 3 07 13 pm](https://f.cloud.github.com/assets/25666/650450/a0a38d1e-d45c-11e2-8cbb-1b259976a690.png)