Minor Graves quality of life change. (let him destroy wards faster)

Trying to destroy wards, and other things like teemo mushrooms, can be quite time consuming for Graves. Due to the way his AA works you're going to require a reload before destroying it. This makes the whole process about 3.5 seconds to destroy a ward.

What I think is that if multiple bullets strike a ward, it should be able to take multiple shots and break sooner.