Fix links in pacman.conf

[Shatur]

Without this I have the following error:

:: Synchronizing package databases...
 danctnix-testing.db failed to download
 danctnix.db failed to download
 core is up to date
 extra is up to date
 alarm is up to date
error: failed retrieving file 'danctnix-testing.db' from p64.arikawa-hi.me : The requested URL returned error: 404
error: failed retrieving file 'danctnix.db' from p64.arikawa-hi.me : The requested URL returned error: 404
error: failed to synchronize all databases (unexpected error)