https://sports.stackexchange.com/help/badges/84/informed
The HTML <a>
Tag is shown instead of a link...
Edit: While writing this post it occured to me, that this might not be the only place where this bug can be found and - surprise - there is more:
https://sports.stackexchange.com/help/badges
Of course I might have missed something. Feel free to add similar sites into my report.