Rather ironically, the OP on this question misspelled spelling so we now have a tag called spelign.
http://apple.stackexchange.com/questions/269923/verify-the-automatic-language-detectionhttps://apple.stackexchange.com/questions/269923/verify-the-automatic-language-detection
How are these dealt with?
I didn't just want to retag it spelling or spell-check as I'm not sure what that would then do with the orphaned tag.