[CentOS] Wiki links broken

[lhecking at users.sourceforge.net]

> I will change the instructions  on the wiki to say to edit the files
> that are included in the centos-release rpm.

 Thanks, Johnny.

 That's not really my problem. My problem is that I now need to track an
 additional channel for updates, with associated local mirror and scripting.
 I was only vaguely aware of it until I was looking for an update I know I
 saw in the announce digest and it wasn't in updates.