fix comment

lib/util/importer.js

@@ -58,7 +58,7 @@ module.exports = crowi => {
   };
 
     /**
-   * Import page data from esa to GROWI
+   * Import page data from qiita to GROWI
    */
   importer.importDataFromQiita = user => {
     return new Promise((resolve, reject) => {