I've been experimenting with Firefox in a VM, and I'm pretty sure now that it is uBlock Origin that is what I used, and not AdBlock Plus. I've managed to make it work to remove both the Digital Ocean link and the text below it, but it's a weird way, and I don't think that's how I did it the first time. I will fiddle with it a little more to see if I can find an easier method.I may try ABP tomorrow and see what that may offer.
Of course, it's not an obnoxious ad in the first place, and maybe no one else cares to remove it?