docs: Fix description in set_rate_limit_per_user (#907)

Author: B1ue-Dev

interactions/api/models/channel.py

@@ -487,7 +487,7 @@ async def set_rate_limit_per_user(
         reason: Optional[str] = None,
     ) -> "Channel":
         """
-        Sets the position of the channel.
+        Sets the amount of seconds a user has to wait before sending another message.
 
         :param rate_limit_per_user: The new rate_limit_per_user of the channel (0-21600)
         :type rate_limit_per_user: int