Fix DiscordChannel.Users exception message
Created by: uwx
Summary
Fixes the exception message for the getter for DiscordChannel.Users.
Details
The message seems to incorrectly say "permissions" instead of "users," which makes no sense.
Changes proposed
- Change the exception message for the DiscordChannel.Users getter from
Cannot query permissions for non-guild channels.
toCannot query users outside of guild channels.