use relative url

Author: samuelcolvin

_includes/our-tutors.html

@@ -45,6 +45,6 @@ <h3 class="tutor-sign-up">Interested in becoming a tutor?</h3>
 <script>
   socket('{{ site.socket_key }}', {
     router_mode: 'history',
-    api_root: 'https://dinotutors.com/socket-api'
+    api_root: '/socket-api'
   });
 </script>