[FrameworkBundle] fixed XSD for validation

src/Symfony/Bundle/FrameworkBundle/Resources/config/schema/symfony-1.0.xsd

@@ -26,6 +26,7 @@
 
   <xsd:complexType name="validation">
     <xsd:attribute name="enabled" type="xsd:boolean" />
+    <xsd:attribute name="annotations" type="xsd:boolean" />
   </xsd:complexType>
 
   <xsd:complexType name="user">