Exclude rv_zbs instructions from Branch direct type

[lz-bro]

Greetings.

The following code seems to have forgotten to exclude the bset/bclr/bext/binv instruction ？

tg-nexus-trace/refcode/c/NexRvConv.c

Lines 146 to 148 in e0f02c6

	const char *iType = "L";
	if (instr[0] == 'j' || (instr[0] == 'b' && instr[4] != 'i'))
	// That 'i' for for bseti/bclri/bexti/binvi - see https://github.com/riscv/riscv-opcodes/blob/master/rv32_zbs

see https://github.com/riscv/riscv-opcodes/blob/dc3dfad509b5274a3bc69a377cd7821550d30b3e/extensions/rv_zbs