Fixed typings in some functions (#261)
Fixed typings in some functions (#261)

* Fixed typings in some functions

* Forgot to mark ownerOverride as optional

* Found another wrongly typed param

* Change to permissionstring for better matching

Gawdl3y/discord.js-commando,Gawdl3y/discord.js-commando,Gawdl3y/discord.js-commando