Add a blurb to the jam page

src/templates/src/wheeljam_index.html

@@ -334,6 +334,7 @@
                         <p>Submit your work by the end of October 3 in your local timezone.</p>
                         <ul>
                             <li>Create a thread in the <a href="https://handmade.network/forums/jam" target="_blank">Wheel Reinvention Jam</a> subforum.</li>
+                            <li>Provide a description of your project, for those unfamiliar. And please share some closing thoughts - did it turn out how you hoped? What did you learn? If you were to do this for real, what would you change?</li>
                             <li>
                                 <p>
                                     Your submission post is required to have multiple screenshots of your software in action, and ideally should include a demo video. It doesn’t need to be fancy, but people should be able to see it without needing to run the actual program.