Add link to example pull request

index.html

@@ -39,7 +39,7 @@ layout: course_about
     <ol>
       <li>Fork this repository on GitHub. You can do so by clicking <a href="https://github.com/p2pu/jekyll-course-experiment/fork">here</a></li>
       <li>Next up you need to edit <a href="https://github.com/p2pu/jekyll-course-experiment/blob/gh-pages/_data/course.yml">_data/course.yml</a>. Add your name, image URL and Twitter handle.</li>
-      <li>Submit a pull request to get your changes merged into the main version of the course and have your mug show up here!</li>
+      <li>Submit a pull request to get your changes merged into the main version of the course and have your mug show up here! See <a href="https://github.com/p2pu/jekyll-course-experiment/pull/1">this pull request</a> for an example.</li>
     </ol>
   </div>
 </div>