Update index.html

dev/bench/index.html

@@ -105,7 +105,7 @@
     </footer>
 
     <script src="https://cdn.jsdelivr.net/npm/chart.js@2.9.2/dist/Chart.min.js"></script>
-    <script src="data_after.js"></script>
+    <script src="data.js"></script>
     <script id="main-script">
       'use strict';
       (function() {