Add missing buit-in normalizers

Author: l-vo

serializer.rst

@@ -103,13 +103,16 @@ As well as the following normalizers:
   handle typical data objects
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\DateTimeNormalizer` for
   objects implementing the :phpclass:`DateTimeInterface` interface
+* :class:`Symfony\\Component\\Serializer\\Normalizer\\DateIntervalNormalizer` for :phpclass:`DateInterval` objects
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\DataUriNormalizer` to
   transform :phpclass:`SplFileInfo` objects in `Data URIs`_
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\JsonSerializableNormalizer`
   to deal with objects implementing the :phpclass:`JsonSerializable` interface
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\ArrayDenormalizer` to
   denormalize arrays of objects using a format like `MyObject[]` (note the `[]` suffix)
 
+.. _`Data URIs`: https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
+
 Custom normalizers and/or encoders can also be loaded by tagging them as
 :ref:`serializer.normalizer <reference-dic-tags-serializer-normalizer>` and
 :ref:`serializer.encoder <reference-dic-tags-serializer-encoder>`. It's also

serializer/normalizers.rst

@@ -26,12 +26,20 @@ Symfony includes the following normalizers but you can also
 
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\ObjectNormalizer` to
   normalize PHP object using the :doc:`PropertyAccessor component </components/property_access>`;
+* :class:`Symfony\\Component\\Serializer\\Normalizer\\DateTimeNormalizer` for
+  objects implementing the :phpclass:`DateTimeInterface` interface
+* :class:`Symfony\\Component\\Serializer\\Normalizer\\DateIntervalNormalizer` for :phpclass:`DateInterval` objects
+* :class:`Symfony\\Component\\Serializer\\Normalizer\\DataUriNormalizer` to
+  transform :phpclass:`SplFileInfo` objects in `Data URIs`_
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\CustomNormalizer` to
   normalize PHP object using an object that implements
   :class:`Symfony\\Component\\Serializer\\Normalizer\\NormalizableInterface`;
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\GetSetMethodNormalizer` to
   normalize PHP object using the getter and setter methods of the object;
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\PropertyNormalizer` to
   normalize PHP object using `PHP reflection`_.
+* :class:`Symfony\\Component\\Serializer\\Normalizer\\JsonSerializableNormalizer`
+  to deal with objects implementing the :phpclass:`JsonSerializable` interface
 
+.. _`Data URIs`: https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
 .. _`PHP reflection`: https://php.net/manual/en/book.reflection.php