Correction for links in documentations

[Laurent Hubert <laurent.hubert@chus.qc.ca>]

Hello,

It's a pleasure to see that the documentation is now update to "potato".
And that "potato" meet it's promises to work with PowerPC.  In my case 
PowerPC 604  (Motorola's PowerStack).

Nevertheless, please take note that at the page
http://www.debian.org/releases/stable/powerpc/release-notes/ch-installing.en.html

The link http://www.debian.org/releases/2.2/powerpc/install
lead to a page that is in a language that is not english, french or spanish.


Laurent