http://bugs.winehq.org/show_bug.cgi?id=33549
--- Comment #10 from Rosanne DiMesio dimesio@earthlink.net 2013-05-14 16:26:44 CDT --- The instructions on the Ubuntu download page were written by the Ubuntu package maintainer. You need to contact him about any suggested changes to it.
BTW, I happen to agree with you that calling it the "WineHQ PPA Repository" on that page is very confusing to users. You might want to mention that to Scott when you contact him.
As for the link being wrong, no, it isn't. The "visit its Launchpad page" link at the very bottom of that page still does lead to https://launchpad.net/~ubuntu-wine/+archive/ppa, which is the correct link for the Ubuntu PPA.