docs: fix attachFiles() docs (#2267)
docs: fix attachFiles() docs (#2267)

* docs change

* fix attachFiles docs

* why was this still here

CodeMan99/discord.js,appellation/discord.js,Lewdcario/discord.js,CodeMan99/discord.js,hydrabolt/discord.js,SpaceEEC/discord.js,hydrabolt/discord.js,SpaceEEC/discord.js,hydrabolt/discord.js,appellation/discord.js,Drahcirius/discord.js,Lewdcario/discord.js,Drahcirius/discord.js,CodeMan99/discord.js,Lewdcario/discord.js,appellation/discord.js,SpaceEEC/discord.js,Drahcirius/discord.js