Finish #4967: Code style standardization on form type options

reference/forms/types/collection.rst

@@ -327,7 +327,7 @@ well as :ref:`cookbook-form-collections-new-prototype`.
 prototype_name
 ~~~~~~~~~~~~~~
 
-**type**: ``String`` **default**: ``__name__``
+**type**: ``string`` **default**: ``__name__``
 
 If you have several collections in your form, or worse, nested collections
 you may want to change the placeholder so that unrelated placeholders are

reference/forms/types/entity.rst

@@ -183,7 +183,7 @@ directly.
 choices
 ~~~~~~~
 
-**type**:  array | ``\Traversable`` **default**: ``null``
+**type**:  ``array`` | ``\Traversable`` **default**: ``null``
 
 Instead of allowing the `class`_ and `query_builder`_ options to fetch the
 entities to include for you, you can pass the ``choices`` option directly.

reference/forms/types/options/attr.rst.inc

@@ -1,7 +1,7 @@
 attr
 ~~~~
 
-**type**: array **default**: Empty array
+**type**: ``array`` **default**: ``array()``
 
 If you want to add extra attributes to an HTML field representation
 you can use the ``attr`` option. It's an associative array with HTML attributes

reference/forms/types/options/button_attr.rst.inc

@@ -1,7 +1,7 @@
 attr
 ~~~~
 
-**type**: array **default**: Empty array
+**type**: ``array`` **default**: ``array()``
 
 If you want to add extra attributes to the HTML representation of the button,
 you can use ``attr`` option. It's an associative array with HTML attribute

reference/forms/types/options/constraints.rst.inc

@@ -1,7 +1,7 @@
 constraints
 ~~~~~~~~~~~
 
-**type**: array or :class:`Symfony\\Component\\Validator\\Constraint` **default**: ``null``
+**type**: ``array`` or :class:`Symfony\\Component\\Validator\\Constraint` **default**: ``null``
 
 Allows you to attach one or more validation constraints to a specific field.
 For more information, see :ref:`Adding Validation<form-option-constraints>`.

reference/forms/types/options/error_mapping.rst.inc

@@ -4,7 +4,7 @@ error_mapping
 .. versionadded:: 2.1
     The ``error_mapping`` option was introduced in Symfony 2.1.
 
-**type**: ``array`` **default**: ``empty``
+**type**: ``array`` **default**: ``array()``
 
 This option allows you to modify the target of a validation error.