vfio/pci: fix the wrong word

This patch fixes a wrong word in comment.

Signed-off-by: Bo Liu <liubo03@inspur.com>
Link: https://lore.kernel.org/r/20220801013918.2520-1-liubo03@inspur.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>