Privacy policy link

app/views/layouts/_footer.html.erb

@@ -6,6 +6,7 @@
         <ul>
           <li><%= link_to 'Terms of Service', '/policy/tos' %></li>
           <li><%= link_to 'Code of Conduct', '/policy/code-of-conduct' %></li>
+          <li><%= link_to 'Privacy Policy', '/assets/privacy-policy.pdf' %></li>
           <li><%= link_to 'About us', 'https://codidact.org/' %></li>
           <li><%= link_to 'Other sites', 'https://codidact.com/' %></li>
         </ul>