[eslint] updated eslintrc and improved the code (#4702)

frontend/src/components/dialog/org-logs-file-update-detail.js

@@ -50,7 +50,7 @@ class FileUpdateDetailDialog extends React.Component {
     for (var i = 0, len = items.length; i < len; i++) {
       con += '<li class="list-group-item">' + items[i] + '</li>';
     }
-    con += '</ul>'; 
+    con += '</ul>';
     return {__html: con};
   }