[gthumb-list] website link is wrong

[Jackson Doak <noskcaj ubuntu com>]

One of the xubuntu testers just found a very easy to fix bug in gthumb, would someone mind taking a look? https://bugs.launchpad.net/ubuntu/+source/gthumb/+bug/1262861

If you patch it before he does, please forward the patch to me so i can fix it in ubuntu too