xfs_db.8: document write -d option

The xfs_db write "-d" option allows us to write bad
data with a good CRC, as added in 
86769b3 xfs_db: allow recalculating CRCs on invalid metadata
but never documented, so do that now.

[sandeen: split out doc patch]

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

1 file changed