Update getting_started.rst
Update getting_started.rst
landlab/landlab,SiccarPoint/landlab,RondaStrauch/landlab,csherwood-usgs/landlab,Carralex/landlab,RondaStrauch/landlab,landlab/landlab,RondaStrauch/landlab,amandersillinois/landlab,amandersillinois/landlab,ManuSchmi88/landlab,laijingtao/landlab,Carralex/landlab,cmshobe/landlab,cmshobe/landlab,decvalts/landlab,cmshobe/landlab,laijingtao/landlab,ManuSchmi88/landlab,SiccarPoint/landlab,landlab/landlab,ManuSchmi88/landlab,csherwood-usgs/landlab,decvalts/landlab,Carralex/landlab