Just realized typo on JHU supplement...

Accidentally put in 'armer’s" when I should have put ‘farmer’s’, I do spell it correctly later in the essay in the same situation and context however. do you think I should email the adcom office or should I just let it be?

Either decision is probably okay. If you are a candidate they want, a typo won’t matter, unless the typo is “The college I’ve dreamed of attending since I was in diapers is Georgetown”. Johns Hopkins might have some issues with that typo.