add help to use recontructlog in ffs/filter/filter.sh
add help to use recontructlog in ffs/filter/filter.sh

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs