[docs only] Clean up singularity docs
[docs only] Clean up singularity docs
poldracklab/fmriprep,oesteban/fmriprep,poldracklab/fmriprep,oesteban/fmriprep,oesteban/preprocessing-workflow,poldracklab/fmriprep,oesteban/preprocessing-workflow,oesteban/fmriprep,poldracklab/preprocessing-workflow,poldracklab/preprocessing-workflow