Update hex.py
Update hex.py

Nicole undoing her mistakes
laijingtao/landlab,RondaStrauch/landlab,amandersillinois/landlab,cmshobe/landlab,SiccarPoint/landlab,landlab/landlab,csherwood-usgs/landlab,laijingtao/landlab,amandersillinois/landlab,SiccarPoint/landlab,cmshobe/landlab,ManuSchmi88/landlab,landlab/landlab,csherwood-usgs/landlab,Carralex/landlab,RondaStrauch/landlab,landlab/landlab,RondaStrauch/landlab,decvalts/landlab,Carralex/landlab,ManuSchmi88/landlab,decvalts/landlab,ManuSchmi88/landlab,Carralex/landlab,cmshobe/landlab