doc: Add .off to list of file formats supported by convert-pointset [Applications]
doc: Add .off to list of file formats supported by convert-pointset [Applications]

schuhschuh/MIRTK,BioMedIA/MIRTK,stefanpsz/MIRTK,stefanpsz/MIRTK,BioMedIA/MIRTK,BioMedIA/MIRTK,stefanpsz/MIRTK,schuhschuh/MIRTK,schuhschuh/MIRTK,BioMedIA/MIRTK,schuhschuh/MIRTK,stefanpsz/MIRTK