You'd have to show it. (Not close up.)

Do you think the imperfection could be fixed

It is not something that I'd classify as a disaster :-) In fact, I doubt I would give it much consideration at all. It is not something that would bug me and is really only visible at all because it is such a new pour.

Give it a few months and see what it looks like after winter.

You can trim it flush, I'd use a multi-tool, but that's how concrete, not cement, is properly placed, not poured.

I would neither see it as necessary or as a problem. I agree with both prior answers.