^^Turn the fans down or change the direction at which they are blowing. There's no way to fix already damaged leaf though. If i am thinking about what you are talking about the right way i have seen this before in a past grow.
Ive had it happen on a plant before and i think just some plants are more prone to it when getting a fan directly blowing in a small grow space.have a constant direct fan blowing can cause stress but i dont think wind burn is what your talking about. i think the only plants that get wind burned are ones in the desert