Sometimes people don't have a GitHub profile, and I'd like to have [@benbalter](https://twitter.com/benbalter) instead of @benbalter. Looks like on .com it works as expected. However with `jekyll-mentions` I get: [`<a href=‘https://github.com/benbalter’ class=‘user-mention’>@benbalter`](https://twitter.com/benbalter)