fix artist tag typo

BUR #40094 has been rejected.

rename c-r-carols -> c-r-carlos

fix typo

the tag is empty though, you don't need to do anything

CommentaryRequest said:

the tag is empty though, you don't need to do anything

The tag search suggestion pointed to this wrong tag when I posted this. It has now been fixed, but it still shows up in the tag list if you select Hide empty to no. I'm not sure if it is necessary to fix.
https://danbooru.donmai.us/tags?commit=Search&search%5Bhide_empty%5D=no&search%5Bname_or_alias_matches%5D=c-r-carols&search%5Border%5D=date

I think empty tags are removed completely after a certain amount of time has passed. In any case, there’s nothing more to be done from our end.

The bulk update request #40094 (forum #347805) has been rejected by @asgembed.