Nobody was
If you look at the comments absolutely NOBODY cared about it and was just contributing to the damn conversation.
If you were reading at normal speed instead of reading letter by letter scouting out mistakes like a nerd, just let it go
instead of making people miserable because he said "fist" and not "first"
Does it really matter if he or anyone else has a spelling error?
Now go to the corner and think about what you've done