Fix mismatch description

Editor assessment

The subject says a mismatch description was fixed, which is ambiguous on its face: mismatch could be a challenge name or an adjective describing a description that does not match something. The reader must open the diff or the PR page to learn which. The fix type and curriculum scope are accurate as far as they go. No body exists, and one line clarifying the reference and the nature of the mismatch would have resolved the ambiguity. The PR reference is well formed. Style is otherwise clean: imperative, unperioded, short. Understandable with effort, so the message lands at mediocre rather than good.