fc-shell help: batt command: better documentation The semantic meaning of the two bytes carried in the MMI_BATTERY_IND primitive depends on the firmware version. Update the documentation to describe what these two bytes mean in current FC Tourmaline firmware.

main()
{
	printf("Hello-world demo app (fixed UART version) running\n");
	for (;;) {
		putchar('=');
		if (command_entry())
			command_dispatch();
	}
}