Gotta say, this is much ado about nothing. They will not care one iota about your misplaced quote marks or whatever it is. I had to read it twice to see what the problem is. You must understand, they will spend about 10-15 tops on your app. They won’t care about that. Please don’t stress.
If you want an example of a BAD TYPO, my D realized a month after submitting an app that when the Google doc uploaded to the common app it inserted weird, random punctuation marks throughout the essay. She had to submit a corrected essay. That is an example of bad typos.