Called the school wrong while sending email.

<p>I have sent this email(Below) to colleges, so that I could correct my STUPID mistake.
And I made another stupid mistake while doing so.
Since I was sending this email to few different schools, I was copying and pasting my email.
While doing so, I have mistakenly sent the mail to Carnegie Mellon U without a correction on school name.
I referred to it as "University of Rochester."
I immediately corrected my error and sent it back again - as if it was an error from gmail.
I didn't even apologize, and I'm just wishing now that the person who looks at this message to see it as an error.
I'm very depressed right now.
Would they regard this as a serious issue?
(Admission officer can already tell 2 dumb mistakes of mine from this email, and CMU is one of the top schools in US - they wouldn't want a student who makes mistakes frequently.)</p>

<p>Email I've sent to Carnegie Mellon University:
"Hi. I'm ____, and I have applied to University of Rochester, this year, through Regular Decision.
While tracking my application, I have noticed that I had a fault on my application.
I have long wanted to upload one of my noticeable strengths, my AP tests and scores, on my application; however, I did not know where to put those.
Now, when I had reviewed over my common app, I noticed that I can input my AP tests/scores on the Testing section which, I initially believed, was for SAT/ACT/TOEFL only.
Would you please be able to note my AP tests/scores on my application?</p>

<p>____'s Ap Tests/Scores:
....
....</p>

<p>I'm very sorry for my mistake.
And thank you for helping me out.
Sincerely, _____."</p>