[ZF-9155] Zend_Validate:

- fixed message

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@21043 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Validate/File/IsImage.php

@@ -46,7 +46,7 @@ class Zend_Validate_File_IsImage extends Zend_Validate_File_MimeType
      */
     protected $_messageTemplates = array(
         self::FALSE_TYPE   => "File '%value%' is no image, '%type%' detected",
-        self::NOT_DETECTED => "The mimetype of file '%value%' could not been detected",
+        self::NOT_DETECTED => "The mimetype of file '%value%' could not be detected",
         self::NOT_READABLE => "File '%value%' can not be read",
     );