found TYPO...after submission

<p>i just found a typo in two of the essays i just submitted. what do i do now? is there anything i can do? it was a ";" instead of a "," which you can imagine, can make a huge difference when reading...and i forgot to add a "so" where it was vitally needed. am i screwed?</p>

<p>No, don’t worry about it.</p>

<p>Probably, not.</p>