Fix indentation in some annotations

Author: iamdto

book/validation.rst

@@ -729,19 +729,19 @@ user registers and when a user updates their contact information later:
  class User implements UserInterface
  {
  /**
- * @Assert\Email(groups={"registration"})
- */
+  * @Assert\Email(groups={"registration"})
+  */
  private $email;
 
  /**
- * @Assert\NotBlank(groups={"registration"})
- * @Assert\Length(min=7, groups={"registration"})
- */
+  * @Assert\NotBlank(groups={"registration"})
+  * @Assert\Length(min=7, groups={"registration"})
+  */
  private $password;
 
  /**
- * @Assert\Length(min=2)
- */
+  * @Assert\Length(min=2)
+  */
  private $city;
  }
 
@@ -918,13 +918,13 @@ username and the password are different only if all other validation passes
  class User implements UserInterface
  {
  /**
- * @Assert\NotBlank
- */
+  * @Assert\NotBlank
+  */
  private $username;
 
  /**
- * @Assert\NotBlank
- */
+  * @Assert\NotBlank
+  */
  private $password;
 
  /**