I've been getting the Worldbuilding Stack Exchange Newsletter through email every week. I don't think I deliberately subscribed to it, and don't particularly want it. I finally made the effort to try to unsubscribe from it today.
Down at the bottom of the email is this notice saying that I subscribed to the community digest (no, I don't think I did) and to follow a link to unsubscribe:
I tried following the "Edit email settings" link instead. None of the settings there seem to be particularly relevant to this particular piece of email.
How do I actually unsubscribe from this Fine newsletter?