udev rule in README is broken

[foxcpp]

RUN
...
Starting daemons or other long running processes is not appropriate for udev; the forked processes, detached or not, will be unconditionally killed after the event handling has finished.

[foxpy]

Uh oh, I have accidentally published the wrong udev rule. The one I have used was spawning serialjs process with systemd-run. It technically worked, yes, despite being an ugly and defective solution. I am going to add systemd service to repo when I have any USB device emulating COM port to actually debug it.