vfio: remove an extra semicolon

remove an extra semicolon from the example code

Signed-off-by: foryun.ma <foryun.ma@jaguarmicro.com>
Link: https://lore.kernel.org/r/20240510003735.2766-1-foryun.ma@jaguarmicro.com


Signed-off-by: Alex Williamson <alex.williamson@redhat.com>