Merge pull request zendframework/zendframework#2940 branch 'hotfix/fi…

…x-exception-message'

src/Cloud.php

@@ -244,7 +244,7 @@ public function setTagDecorator($decorator)
         }
 
         if (!($decorator instanceof Cloud\Decorator\AbstractTag)) {
-            throw new Exception\InvalidArgumentException('DecoratorInterface is no instance of Cloud\Decorator\Tag');
+            throw new Exception\InvalidArgumentException('DecoratorInterface is no instance of Cloud\Decorator\AbstractTag');
         }
 
         $this->tagDecorator = $decorator;