Documented how to force router to use https schema

Author: karser

routing/scheme.rst

@@ -94,3 +94,10 @@ to always use ``http``.
     to secure an "area" of your website (all URLs under ``/admin``) or when
     you want to secure URLs defined in a third party bundle (see
     :doc:`/security/force_https` for more details).
+
+.. note::
+
+    Inside CLI commands or the messenger workers the router context is not defined
+    and you may want to force the router to always generate https or http urls.
+    This can be achieved with specifying ``router.request_context.scheme: 'https'``
+    in your your parameters. (see :doc:`/console/request_context.rst` for more details).