Fix simulation condition in LbMCSubmit
There is a typo in simulation condition for Run3 Pb-Ar, Ar-Pb, PbPbAr, should be "*Nu0.37" instead of "Fix1"
There is a typo in simulation condition for Run3 Pb-Ar, Ar-Pb, PbPbAr, should be "*Nu0.37" instead of "Fix1"