Fixed an error in the help for @ban.
Fixed an error in the help for @ban.

mrkulk/text-world,emergebtc/evennia,feend78/evennia,feend78/evennia,jamesbeebop/evennia,titeuf87/evennia,feend78/evennia,titeuf87/evennia,ypwalter/evennia,titeuf87/evennia,mrkulk/text-world,mrkulk/text-world,ergodicbreak/evennia,feend78/evennia,emergebtc/evennia,ypwalter/evennia,jamesbeebop/evennia,shollen/evennia,emergebtc/evennia,jamesbeebop/evennia,titeuf87/evennia,mrkulk/text-world,ergodicbreak/evennia,TheTypoMaster/evennia,ergodicbreak/evennia,ypwalter/evennia,shollen/evennia,TheTypoMaster/evennia,TheTypoMaster/evennia