[UPDATE] Add versionadded for cdata_wrapping option and fix CS

Author: AndoniLarz

components/serializer.rst

@@ -1209,9 +1209,13 @@ Option                          Description
 ``cdata_wrapping``              If set to false, will not wrap any value           ``true``
                                 containing one of the following characters (
                                 ``<``, ``>``, ``&``) in `a CDATA section`_ like
-                                following : ``<![CDATA[...]]>``
+                                following: ``<![CDATA[...]]>``
 ==============================  =================================================  ==========================
 
+.. versionadded:: 6.4
+
+    The `cdata_wrapping` option was introduced in Symfony 6.4.
+
 Example with custom ``context``::
 
     use Symfony\Component\Serializer\Encoder\XmlEncoder;