Update link to contributing page
As the wiki page only links to the contributing page on the website, it makes sense to directly link there :)
This gitlab instance has an upgrade scheduled for Monday, May 19 @ 17:00 UTC. At least 1 hour of downtime can be expected while this is taking place. Thanks for your patience and happy hacking!
As the wiki page only links to the contributing page on the website, it makes sense to directly link there :)