Fix typo

Author: Lulalaby

discord/guild.py

@@ -202,7 +202,7 @@ class Guild(Hashable):
         - ``ANIMATED_BANNER``: Guild can upload an animated banner.
         - ``ANIMATED_ICON``: Guild can upload an animated icon.
         - ``BANNER``: Guild can upload and use a banner. (i.e. :attr:`.banner`)
-        - ``CHANNEL_BANNER``: Guild can upload and use a channel banner.
+        - ``CHANNEL_BANNER``: Guild can upload and use a channel banners.
         - ``COMMERCE``: Guild can sell things using store channels.
         - ``COMMUNITY``: Guild is a community server.
         - ``DISCOVERABLE``: Guild shows up in Server Discovery.