modules : fixed bug in `modify_module` arguments
modules : fixed bug in `modify_module` arguments

tmerrick1/spack,mfherbst/spack,lgarren/spack,TheTimmy/spack,matthiasdiener/spack,EmreAtes/spack,EmreAtes/spack,LLNL/spack,lgarren/spack,tmerrick1/spack,skosukhin/spack,skosukhin/spack,krafczyk/spack,iulian787/spack,tmerrick1/spack,matthiasdiener/spack,matthiasdiener/spack,krafczyk/spack,EmreAtes/spack,iulian787/spack,iulian787/spack,krafczyk/spack,TheTimmy/spack,iulian787/spack,LLNL/spack,lgarren/spack,LLNL/spack,lgarren/spack,mfherbst/spack,LLNL/spack,TheTimmy/spack,LLNL/spack,krafczyk/spack,mfherbst/spack,TheTimmy/spack,matthiasdiener/spack,lgarren/spack,TheTimmy/spack,mfherbst/spack,skosukhin/spack,matthiasdiener/spack,tmerrick1/spack,mfherbst/spack,skosukhin/spack,tmerrick1/spack,skosukhin/spack,iulian787/spack,krafczyk/spack,EmreAtes/spack,EmreAtes/spack