README: fix setup-scripts URL
README: fix setup-scripts URL

Signed-off-by: Koen Kooi <42e3d96910f922bdd7dd1805fe3f8aff634f391d@dominion.thruhere.net>
sarnold/meta-alt-desktop-extras,sarnold/meta-alt-desktop-extras,sarnold/meta-alt-desktop-extras