MAGETWO-90349: Template file 'header.html' is not found.

Author: ameysar

app/code/Magento/Email/Model/Template/Config.php

@@ -234,7 +234,7 @@ protected function _getInfo($templateId, $fieldName)
 
     /**
      * Retrieve template file path.
-     * 
+     *
      * @param string $file
      * @param array $designParams
      * @param string $module