[Discord] Update Bot method to raise TimeoutError

Update Bot.wait_for_raw_reaction_add_or_remove method to raise TimeoutError instead of asyncio.TimeoutError

Discord/bot.py

@@ -1188,7 +1188,7 @@ def raw_reaction_check(payload):
         for task in pending:
             task.cancel()
         if not done:
-            raise asyncio.TimeoutError
+            raise TimeoutError
         return done.pop().result()
 
     # Override Context class