wifi: ath11k: Fix spelling mistake "chnange" -> "change"

There is a spelling mistake in an ath11k_dbg debug message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220928143834.35189-1-colin.i.king@gmail.com