fix nikola help <command> (copy new doit impl)
fix nikola help <command> (copy new doit impl)

Signed-off-by: Chris Warrick <de6f931166e131a07f31c96c765aee08f061d1a5@gmail.com>

techdragon/nikola,jjconti/nikola,xuhdev/nikola,knowsuchagency/nikola,masayuko/nikola,x1101/nikola,getnikola/nikola,pluser/nikola,lucacerone/nikola,x1101/nikola,wcmckee/nikola,getnikola/nikola,yamila-moreno/nikola,getnikola/nikola,gwax/nikola,wcmckee/nikola,JohnTroony/nikola,schettino72/nikola,berezovskyi/nikola,lucacerone/nikola,andredias/nikola,yamila-moreno/nikola,andredias/nikola,getnikola/nikola,knowsuchagency/nikola,s2hc-johan/nikola,gwax/nikola,schettino72/nikola,okin/nikola,knowsuchagency/nikola,atiro/nikola,xuhdev/nikola,techdragon/nikola,atiro/nikola,atiro/nikola,jjconti/nikola,TyberiusPrime/nikola,pluser/nikola,berezovskyi/nikola,wcmckee/nikola,okin/nikola,okin/nikola,okin/nikola,pluser/nikola,immanetize/nikola,xuhdev/nikola,jjconti/nikola,x1101/nikola,lucacerone/nikola,schettino72/nikola,JohnTroony/nikola,berezovskyi/nikola,immanetize/nikola,TyberiusPrime/nikola,gwax/nikola,immanetize/nikola,masayuko/nikola,s2hc-johan/nikola,JohnTroony/nikola,s2hc-johan/nikola,TyberiusPrime/nikola,techdragon/nikola,yamila-moreno/nikola,xuhdev/nikola,andredias/nikola,masayuko/nikola