wifi: mwifiex: Fix comment typo

The double `the' is duplicated in line 1540, remove one.

Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220715050053.24382-1-wangborong@cdjrlc.com
Link: https://lore.kernel.org/r/20220722083031.74847-1-slark_xiao@163.com
Link: https://lore.kernel.org/r/20220722084158.75647-1-slark_xiao@163.com
Link: https://lore.kernel.org/r/20220722084833.76159-1-slark_xiao@163.com