Update assert validation length to new format

Author: hugohenrique

Resources/doc/overriding_forms.md

@@ -38,8 +38,8 @@ class User extends BaseUser
      * @ORM\Column(type="string", length=255)
      *
      * @Assert\NotBlank(message="Please enter your name.", groups={"Registration", "Profile"})
-     * @Assert\MinLength(limit="3", message="The name is too short.", groups={"Registration", "Profile"})
-     * @Assert\MaxLength(limit="255", message="The name is too long.", groups={"Registration", "Profile"})
+     * @Assert\Length(min=3, message="The name is too short.", groups={"Registration", "Profile"})
+     * @Assert\Length(max=255, message="The name is too long.", groups={"Registration", "Profile"})
      */
     protected $name;