One tiny change for Soraka

Alright, it is a common opinion that is op, and I see where people are coming from. I don't want her heal buffed, nor do I wish to see her have more damage; all I ask for is to get more health back when you land your Q on more than one enemy. Even an extra 50% per each extra champion hit. I feel this is a fair change because it is difficult to land her Q in a team fight without the risk of their assassin jumping on you due to the lowered range.