Hi Danuka,
Probably you might want to contact them, If you have given a " your handle, alias, or nickname" for the "Display Name", it looks like, that the given nick name has used to display as the name. I gave my full name as the display name, and mine is displayed correctly. I don't know why it is not possible at this moment to change/modify to your real name.
If I were you, I would contact both GSoC2016 and the organization you are assigned to regarding this, since it is important to have your name identified correctly.
Best of Luck
Thilanka