How to change actor name

How do you change an actors name?

I just added a film that Amelia Bullmore is in. One of her co-stars 'Eric Kole' appears on the newly created listal listing as Eric Kolelas. But is credited on imdb and the filmmaker's website as Kole. It also seems that Kole is their official name. So how can I change his page to reflect that in the name and the link.

Do let me know if you know the answer, if you know.