xfs_io: add missed quotation marks in man page

The description about set_encpolicy command in xfs_io man page missed
some quotation marks. It's a little picky, but it really causes the
quotation marks can't match each other.

Signed-off-by: Zorro Lang <zlang@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

1 file changed