bpftool: Fix spelling mistake "disasembler" -> "disassembler"

There is a spelling mistake in an error message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/r/20221026081645.3186878-1-colin.i.king@gmail.com


Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>