docs: header authentication service configuration

Author: soullivaneuh

integrations/symfony-bundle.rst

@@ -405,7 +405,7 @@ Authentication
 --------------
 
 You can configure a client with authentication. Valid authentication types are
-``basic``, ``bearer``, ``service``, ``wsse`` and ``query_param``. See more examples at the
+``basic``, ``bearer``, ``service``, ``wsse``, ``query_param`` and ``header``. See more examples at the
 :doc:`full configuration </integrations/symfony-full-configuration>`.
 
 .. code-block:: yaml

integrations/symfony-full-configuration.rst

@@ -50,6 +50,10 @@ This page shows an example of all configuration values provided by the bundle.
                     type: 'query_param'
                     params:
                         access_token: '9zh987g86fg87gh978hg9g79'
+                my_header:
+                    type: 'header'
+                    header_name: 'ApiKey'
+                    header_value: '9zh987g86fg87gh978hg9g79'
                 my_service:
                     type: 'service'
                     service: 'my_authentication_service'