Remove matrix_docker_network references from matrix-bot-maubot

roles/custom/matrix-bot-maubot/templates/systemd/matrix-bot-maubot.service.j2

@@ -29,7 +29,7 @@ ExecStartPre={{ devture_systemd_docker_base_host_command_docker }} create \
 			{% for arg in matrix_bot_maubot_container_extra_arguments %}
 			{{ arg }} \
 			{% endfor %}
-			--network={{ matrix_docker_network }} \
+			--network={{ matrix_bot_maubot_container_network }} \
 			{% if matrix_bot_maubot_container_management_interface_http_bind_port %}
 			-p {{ matrix_bot_maubot_container_management_interface_http_bind_port }}:{{ matrix_bot_maubot_server_port }} \
 			{% endif %}