Accidently Rounded GPA!! Please Help!

I’m a high school senior and my overall GPA is a 3.15 UW. When I got my transcript in the end of September, I just kept rounding the GPA to a 3.2 in my head and it was just what I put down for my first 2 colleges I applied to today.

It suddenly hit me that I do not have a 3.2 UW but rather a 3.15 UW. Will the colleges verify? Could this pose a problem even if I get accepted into a college? Should I try to notify the college to change the GPA? Am I making this a big deal for nothing?

Please give me your advice! I’m honestly not sure what to think!