I have a question about my Science Fiction & Fantasy Stack Exchange post: What's so special about Harry Potter?
Once your post has been edited, it automatically gets flagged for review, and the community will (eventually) get to look over the changes and vote to reopen it, or make further recommendations. On this site, we have high enough activity that it does not usually take very long for that to happen. You generally won't need to take any more action yourself beyond "fixing" the post, you just may have to wait a while. Especially on a weekend, I'd give at least a few days as activity drops off then.
If your post isn't getting reopened, or if you aren't sure why it was put on hold, or you disagree with some of the changes, then definitely come to this site to ask why. If you do that, though, you should put more detail in your post (e.g. were you told why it was on hold? What "reason code" did you see, and what did you do to fix it and/or why do you disagree?) so that users have some context. As long as you have a link to your question somewhere in your post, you can add whatever other information you think is helpful even if your reputation is low at the time.
In this case it looks like your edits were exactly what was needed and the post has been reopened.