update links

Author: guahsu

index.html

@@ -45,7 +45,7 @@ <h1 class="head__title">JavaScript 30</h1>
     </div>
     <ul class="courseList"></ul>
   </div>
-  <script src="script.js?20171123002"></script>
+  <script src="script.js?20180429"></script>
 </body>
 
 </html>