I'm always a little suspicious when a site that is supposedly blocked by Avast isn't blocked (when I check it out), especially when there is the name hiding the link. Such things can be considered link spamming and could have action taken to stop spamming.
Whilst I'm using the Windows version of Avast, not Avast Mac Security, detections I don't believe would be different other than possibly cosmetic.
Please post, attach a screenshot of the Avast alert.