[Form] Fixed typos

UPGRADE-2.1.md

@@ -329,7 +329,7 @@
     ```
     public function getDefaultOptions()
     {
-        $return array(
+        return array(
             'empty_data' => function (Options $options, $previousValue) {
                 return $options['multiple'] ? array() : $previousValue;
             }

src/Symfony/Bridge/Propel1/Form/Type/ModelType.php

@@ -43,7 +43,7 @@ class ModelType extends AbstractType
             );
         };
 
-        $defaultOptions = array(
+        return array(
             'template'          => 'choice',
             'multiple'          => false,
             'expanded'          => false,