Unfortunately, we are unable to change or edit the spelling of a domain name after you register it. The domain name is registered exactly as you enter it. When the registration succeeds, you are charged, even if the domain name you entered was not what you actually intended to type.
You have the option of cancelling the domain name so that it is no longer registered to you. Remember that cancellation does not guarantee a refund of any portion of your registration fee, and it is a permanent action. You should try to purchase the correct domain name, if it is available.