fix: type-hinting in Guild.bulk_ban (#2440)

Author: yoggys

discord/guild.py

@@ -3134,10 +3134,10 @@ async def bulk_ban(
         Example Usage: ::
 
             # Ban multiple users
-            successes, failures = await guild.ban(user1, user2, user3, ..., reason="Raid")
+            successes, failures = await guild.bulk_ban(user1, user2, user3, ..., reason="Raid")
 
             # Ban a list of users
-            successes, failures = await guild.ban(*users)
+            successes, failures = await guild.bulk_ban(*users)
 
         Parameters
         ----------