add config mount to maubot

roles/matrix-maubot/templates/matrix-maubot.service.j2

@@ -22,7 +22,8 @@ ExecStart=/usr/bin/docker run --rm --name matrix-maubot \
                         -e UID={{ matrix_user_uid }} \
                         -e GID={{ matrix_user_gid }} \
 			--network={{ matrix_docker_network }} \
-			-v {{ matrix_maubot_host_data_dir }}:/data:z \
+			-v {{ matrix_maubot_host_data_dir }}:{{ matrix_maubot_container_data_dir }}:z \
+			-v {{ matrix_maubot_host_config_dir }}:{{ matrix_maubot_container_config_dir }}:z \
 			{% for arg in matrix_maubot_container_extra_arguments %}
 			{{ arg }} \
 			{% endfor %}