Update index.html

index.html

@@ -28,7 +28,7 @@
         for (var k = 0; k <= totalFiles_1; k++) {
           for (var l = 0; l <= totalFiles_2; l++) {
             var option = document.createElement('option');
-            option.value = prefixes[j] + i + "-" + k + "-" + l + '.html';
+            option.value = prefixes[j] + i + "-" + k + "-" + l + '.json';
             option.textContent = prefixes[j] + i + "-" + k + "-" + l;
             selectElement.appendChild(option);
           }