Normalize type formatting in TypeError

Normalize most mixed usages of `__class__`, `__class__!r`, 
`__class__.__name__!r` to the standard form of 
`__class__.__name__`

discord/ext/commands/bot.py

@@ -189,7 +189,7 @@ class BotBase(GroupMixin[None]):
             raise TypeError('Both owner_id and owner_ids are set.')
 
         if self.owner_ids and not isinstance(self.owner_ids, collections.abc.Collection):
-            raise TypeError(f'owner_ids must be a collection not {self.owner_ids.__class__!r}')
+            raise TypeError(f'owner_ids must be a collection not {self.owner_ids.__class__.__name__}')
 
         if help_command is _default:
             self.help_command = DefaultHelpCommand()

discord/ext/commands/cog.py

@@ -490,7 +490,7 @@ class Cog(metaclass=CogMeta):
         """
 
         if name is not MISSING and not isinstance(name, str):
-            raise TypeError(f'Cog.listener expected str but received {name.__class__.__name__!r} instead.')
+            raise TypeError(f'Cog.listener expected str but received {name.__class__.__name__} instead.')
 
         def decorator(func: FuncT) -> FuncT:
             actual = func

discord/ext/commands/converter.py

@@ -1117,7 +1117,7 @@ else:
 
         def __class_getitem__(cls, obj) -> Range:
             if not isinstance(obj, tuple):
-                raise TypeError(f'expected tuple for arguments, received {obj.__class__!r} instead')
+                raise TypeError(f'expected tuple for arguments, received {obj.__class__.__name__} instead')
 
             if len(obj) == 2:
                 obj = (*obj, None)