add Collection as possible param to GuildChannel#overwritePermissions + wording port from 11.3-dev (#2719)
add Collection as possible param to GuildChannel#overwritePermissions + wording port from 11.3-dev (#2719)

* add Collection as possible param to GuildChannel#overwritePermissions

* change PermissionoverwriteOptions desc. default to unset

* fix eslint hiccup

* fix spelling of snowflake

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