Turn the key on, then turn the wipers on.
Turn the wipers off but do not turn the key off.
The wipers will park, but the blades will not be down near the cowl like they should be.
Loosen the nut that holds the wiper arm to the stub that comes up through the body. You don't have to take the nut all the way off, just loosen it.
Wiggle and rock the wiper arm until it comes loose from the stub.
Rotate the wiper arm until it is at the park position.
Do the same with the other arm.
Turn the wipers back on and hit the washers. Then turn off the wipers and check the park position of the blades. You might have to adjust one or both just a bit to get it in the correct position, but they will be close if not spot on.