insert blank line class annotation

Author: brunoroeder

app/code/Magento/Directory/Model/Observer.php

@@ -13,10 +13,10 @@
 namespace Magento\Directory\Model;
 
 /**
-* Class Observer
-*
-* @package Magento\Directory\Model
-*/
+ * Class Observer
+ *
+ * @package Magento\Directory\Model
+ */
 class Observer
 {
     const CRON_STRING_PATH = 'crontab/default/jobs/currency_rates_update/schedule/cron_expr';