wifi: rtw89: mac: Fix spelling mistakes "notfify" -> "notify"

There are two spelling mistakes in rtw89_err error messages. Fix these
and also add space between [ERR] and message text.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231220141831.10063-1-colin.i.king@gmail.com