Add heading to second column of showcase

Author: cooper-mj

index.html

@@ -110,7 +110,7 @@ <h4 class="text-primary">Final Project Showcase</h4>
                   <thead>
                     <tr>
                       <th style="width:40%">Project</th>
-                      <th style="width:40%"></th>
+                      <th style="width:40%">Video</th>
 
                     </tr>
                   </thead>