From an old thread "Just make sure to pull up first, then towards the front of the car. People that dent the hood must be pulling forward using the hood as a fulcrum to get leverage. Instead you should be trying to pull upwards and then just enough forwards to pop it loose."
Very carefully release the clip on the side facing the windshield with a very small screwdriver. You'll have to stick it between the nozzle and hood. Then you pull it up and forward, and disconnect the hose and pull it out.
Make sure you put the hose on first before you put them back in, you cant get the hose in once the nozzle is snapped back into the hood.