some small improvements

Author: OskarStark

reference/constraints/Locale.rst

@@ -78,7 +78,9 @@ Basic Usage
         {
             public static function loadValidatorMetadata(ClassMetadata $metadata)
             {
-                $metadata->addPropertyConstraint('locale', new Assert\Locale(['canonicalize' => true]));
+                $metadata->addPropertyConstraint('locale', new Assert\Locale([
+                    'canonicalize' => true,
+                ]));
             }
         }
 

reference/constraints/Luhn.rst

@@ -73,8 +73,6 @@ will contain a credit card number.
 
         class Transaction
         {
-            protected $cardNumber;
-
             public static function loadValidatorMetadata(ClassMetadata $metadata)
             {
                 $metadata->addPropertyConstraint('cardNumber', new Assert\Luhn([

reference/constraints/Traverse.rst

@@ -27,8 +27,8 @@ configure the ``Traverse`` constraint on the ``Book`` class.
 
     .. code-block:: php-annotations
 
-        // src/AppBundle/Entity/Book.php
-        namespace AppBundle\Entity;
+        // src/Entity/Book.php
+        namespace App\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
         use Doctrine\ORM\Mapping as ORM;
@@ -42,14 +42,14 @@ configure the ``Traverse`` constraint on the ``Book`` class.
             /**
              * @var Author
              *
-             * @ORM\ManyToOne(targetEntity="AppBundle\Entity\Author")
+             * @ORM\ManyToOne(targetEntity="App\Entity\Author")
              */
             protected $author;
 
             /**
              * @var Editor
              *
-             * @ORM\ManyToOne(targetEntity="AppBundle\Entity\Editor")
+             * @ORM\ManyToOne(targetEntity="App\Entity\Editor")
              */
             protected $editor;
 
@@ -58,28 +58,28 @@ configure the ``Traverse`` constraint on the ``Book`` class.
 
     .. code-block:: yaml
 
-        # src/AppBundle/Resources/config/validation.yml
-        AppBundle\Entity\Book:
+        # config/validator/validation.yaml
+        App\Entity\Book:
             constraints:
                 - Symfony\Component\Validator\Constraints\Traverse: ~
 
     .. code-block:: xml
 
-        <!-- src/AppBundle/Resources/config/validation.xml -->
+        <!-- config/validator/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping https://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="AppBundle\Entity\Book">
+            <class name="App\Entity\Book">
                 <constraint name="Symfony\Component\Validator\Constraints\Traverse"/>
             </class>
         </constraint-mapping>
 
     .. code-block:: php
 
-        // src/AppBundle/Entity/Book.php
-        namespace AppBundle\Entity;
+        // src/Entity/Book.php
+        namespace App\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
         use Symfony\Component\Validator\Mapping\ClassMetadata;