You'll just need to take off the rubber cap on the windscreen wiper arm, ....underneath will be a nut, undo that and lift the wiper blade upwards & off the splines (it may well be stiff to pull off so some gentle force might be needed).
Then reposition it a few splines along so that it is not touching the bonnet in its resting position. Re-tighten the nut, replace the rubber cap & job done.
Hope I've explained that ok for you.
Shows you the basics of getting them off in this video.