Document default_auto_archive_duration accepted values

discord/guild.py

@@ -1269,6 +1269,7 @@ class Guild(Hashable):
             .. versionadded:: 2.0
         default_auto_archive_duration: :class:`int`
             The default auto archive duration for threads created in the text channel (in minutes).
+            Must be one of ``60``, ``1440``, ``4320``, or ``10080``.
 
             .. versionadded:: 2.0
         reason: Optional[:class:`str`]
@@ -1578,6 +1579,7 @@ class Guild(Hashable):
             The reason for creating this channel. Shows up in the audit log.
         default_auto_archive_duration: :class:`int`
             The default auto archive duration for threads created in the forum channel (in minutes).
+            Must be one of ``60``, ``1440``, ``4320``, or ``10080``.
         default_thread_slowmode_delay: :class:`int`
             The default slowmode delay in seconds for threads created in this forum.