Added 'datacats less' command to docs.
Added 'datacats less' command to docs.

dborzov/datacats,florianm/datacats,datawagovau/datacats,florianm/datacats,datawagovau/datacats,datacats/datacats,JackMc/datacats,deniszgonjanin/datacats,JackMc/datacats,wardi/datacats,datacats/datacats,poguez/datacats,deniszgonjanin/datacats,poguez/datacats,reneenoble/datacats,JJediny/datacats,dborzov/datacats,JJediny/datacats,reneenoble/datacats,wardi/datacats