fix inputs to hmc2itk
fix inputs to hmc2itk

oesteban/preprocessing-workflow,oesteban/preprocessing-workflow,poldracklab/fmriprep,poldracklab/fmriprep,poldracklab/preprocessing-workflow,poldracklab/fmriprep,oesteban/fmriprep,poldracklab/preprocessing-workflow,oesteban/fmriprep,oesteban/fmriprep