9p/trans_virtio: Fix typo in the comment for p9_virtio_create()

couldlook ==> could look

Link: https://lkml.kernel.org/r/20211216061439.4186-1-zhuran@mail.ustc.edu.cn


Signed-off-by: zhuxinran <zhuran@mail.ustc.edu.cn>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>