Users having links in their description break the UI

See image bug.png

The bug can be found on http://dev.xwiki.org/xwiki/bin/view/Community/HallOfFameFull for the https://github.com/rydenius user

Fixing locally on xwiki.org by replacing the link on http://dev.xwiki.org/xwiki/bin/view/GitHubStats/Jorgen%20Rydenius%20%3Cjorgen%40pingpong.net%3E