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-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.