You can change your artist name for one release only.
Please send us the following information:
> GTIN of the release
You can find the GTIN under "My Music" > Release > the long number next to "GTIN".
> Correctly spelled artist name
Please replace the cover artwork of the release so that it matches the new metadata.
If you wish to change your artist name on several releases, the only way to do this is to reupload them as new releases.