I haven't seen any adjustments for that sort of movement. it's usually left-right, up and down. From that figure, it looks like the passenger headlight itself isn't installed correctly or there's something going on inside of it like vrsick noted.
So it's what I thought then. The front bumper on that side is sticking out about 1cm~ more than the drivers side. And it looks to me like if that extra bit was flush, the entire headlight would sit back to horizontal.
Repair shop said its a clip on the side of the bumper that may have bent or broke.