Another declination of a contribution that I don't understand. . . .

This time, it's #250213-220721-909000. I corrected one word in a plot summary: "corpse." The author of the summary had it "corps." "Corps" always refers to a group of people, while "corpse" refers to a single dead body. From context, the author meant a single dead body. I even gave a link to the appropriate page in Merriam-Webster's online dictionary. I did check the submission guidelines, but I don't see what mistake I made. Could someone please explain this to me? Thank you.