Fix multipart-params usage docstring (#281)
Fix multipart-params usage docstring (#281)

* fix multipart-params usage docstring

* name the multipart-params to align with usage doc

slipset/planck,mfikes/planck,mfikes/planck,mfikes/planck,ericstewart/planck,slipset/planck,slipset/planck,mfikes/planck,slipset/planck,ericstewart/planck,mfikes/planck,mfikes/planck,ericstewart/planck,slipset/planck