inside window switch. Usually a quick tap of the window switch is enough to bring it down to the correct level.
At each end of the top rail is a silver bracket held in position with a black Torx headed bolt.
Loosen both of these with a Torx30 screwdriver and let them drop down to their natural stopping point.
You can then retighten the black bolts. The windows will now stop at that position.
The stop brackets take a lot of force when the window closes. Over time, these get pushed up and become misaligned. Realigning the brackets and tightening then down will sort the issue for many years.