Update PwGeneratorM1S.mo
Update PwGeneratorM1S.mo

validated Update
ahsanKTH/ipsl,tinrabuzin/OpenIPSL,fran-jo/OpenIPSL,OpenIPSL/OpenIPSL,itesla/ipsl,MaximeBaudette/OpenIPSL,SmarTS-Lab/OpenIPSL,SmarTS-Lab/OpenIPSL