[Form] Fixed typos

UPGRADE-2.1.md

@@ -551,7 +551,7 @@
     ));
     ```
 
-    After (if the address object is an array):
+    After:
 
     ```
     $builder->add('name', 'text', array(

src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php

@@ -79,10 +79,14 @@ class FormValidator extends ConstraintValidator
                 }
             }
         } else {
+            $clientDataAsString = is_scalar($form->getClientData())
+                ? (string) $form->getClientData()
+                : gettype($form->getClientData());
+
             // Mark the form with an error if it is not synchronized
             $this->context->addViolation(
                 $form->getAttribute('invalid_message'),
-                array('{{ value }}' => (string) $form->getClientData()),
+                array('{{ value }}' => $clientDataAsString),
                 $form->getClientData(),
                 null,
                 Form::ERR_INVALID

src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php

@@ -64,7 +64,7 @@ class ValidationListener implements EventSubscriberInterface
             if (count($violations) > 0) {
                 foreach ($violations as $violation) {
                     // Allow the "invalid" constraint to be put onto
-                    // non-synchzronized forms
+                    // non-synchronized forms
                     $allowNonSynchronized = Form::ERR_INVALID === $violation->getCode();
 
                     $this->violationMapper->mapViolation($violation, $form, $allowNonSynchronized);

src/Symfony/Component/Form/Form.php

@@ -348,7 +348,7 @@ class Form implements \IteratorAggregate, FormInterface
                 }
 
                 throw new FormException(
-                    'The form\'s client data is expected to of type ' . $expectedType . ', ' .
+                    'The form\'s client data is expected to be of type ' . $expectedType . ', ' .
                     'but is an instance of class ' . get_class($clientData) . '. You ' .
                     'can avoid this error by setting the "data_class" option to ' .
                     '"' . get_class($clientData) . '" or by adding a client transformer ' .