Wrong program name in `usage` screen
See https://gitlab.com/esr/bs/-/blob/master/bs.c#L1175: the executable's name is bs, I assume it used to be battle because that is what gets displayed in the usage screen,
that is typing bs ?.
See https://gitlab.com/esr/bs/-/blob/master/bs.c#L1175: the executable's name is bs, I assume it used to be battle because that is what gets displayed in the usage screen,
that is typing bs ?.