Added operator 'collectFile' doc
Added operator 'collectFile' doc

heuermh/nextflow,heuermh/nextflow,robsyme/nextflow,robsyme/nextflow,nextflow-io/nextflow,robsyme/nextflow,nextflow-io/nextflow,heuermh/nextflow,robsyme/nextflow,heuermh/nextflow,nextflow-io/nextflow,nextflow-io/nextflow,robsyme/nextflow,nextflow-io/nextflow,heuermh/nextflow