I've made this suggestion that fixes an error in a question. It's pending since about 15 minutes, but maybe this delay is normal for this site? If not, is there a way to stimulate the review process?
I approved the question. For me the question of "too minor" is not about how many characters you changed, but rather how fundamentally you changed the nature of the question. In this case although it was a minor textual change, it was a major change to an important detail of the question.
That speed is normal for this site. We are not StackOverflow (and I feel that the speeds for suggested edits on StackOverflow has been increasing lately).
I myself rejected your edit as "Too minor" (Other people will probably approve it though). I would suggest that you instead post a comment on the question stating that you believe it's about problem 32 and not problem 34, and include links to the different problems. It is very hard to verify an edit comment saying "It's about Problem #32, not #34"
To answer the actual question: There is not really a way to speed up the process. The only things you can do is to post on meta (not recommended, because in that case we would have plenty of such requests sooner or later). Another option is to visit the chat room which tends to be quite active actually and let the people there know that you have a suggested edit pending, and while you are there you can also star some of our very interesting conversation messages.