feat(Constants): add error code 50020 (#2953)
feat(Constants): add error code 50020 (#2953)

* feat(Constants): Add error code 50020

Which is throw when using the vanity-url endpoint: https://github.com/discordapp/discord-api-docs/pull/748/

* docs: Document the new code

SpaceEEC/discord.js,SpaceEEC/discord.js,SpaceEEC/discord.js