include the lecture 3 demo solutions on the site

afeld · afeld · commit d60762b3e993 · 2025-04-15T19:47:03.000-04:00
diff --git a/_toc.yml b/_toc.yml
@@ -42,6 +42,8 @@ chapters:
           {%- endif %}
       - file: lecture_3
         sections:
+          - file: lecture_3_demo_solutions
+            title: Demo solutions
           - file: lecture_3_exercise_solution
             title: In-class exercise solution
       - file: lecture_4
