wifi: zd1211rw: fix typo "tranmits"

Spell "transmits" properly.

Found by searching for keyword "tranm".

Signed-off-by: Yueh-Shun Li <shamrocklee@posteo.net>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230622012627.15050-4-shamrocklee@posteo.net