[Form] Fixed coding conventions

src/Symfony/Component/Form/Renderer/FormRendererInterface.php

@@ -22,7 +22,7 @@ interface FormRendererInterface
 
     function setVar($name, $value);
 
-    public function getVar($name);
+    function getVar($name);
 
     function addPlugin(FormRendererPluginInterface $plugin);
 }