This makes them look consistent with the travis badge.

We probably no longer want to advertise it.

Turns out it was already up to date and I just had a stale cache!

Seems like the community was in support of changing it, and someone went and changed it on the homepage, so we might as well stay consistent.

@vcunat dropped `Main_Page` suffix from the link.

(cherry picked from commit 78bb17dd22e4da4e3810fbc78185d73bb25ea73e)
Signed-off-by: Domen Kožar <domen@dev.si>