fix colo init context (#1026)

colossalai/utils/model/colo_init_context.py

@@ -69,7 +69,7 @@ def _setattr_with_colotensor(self, name: str, value: Union[torch.Tensor, torch.n
                     d.discard(name)
 
     params = self.__dict__.get('_parameters')
-    if isinstance(value, (ColoTensor, torch.nn.Parameter)):
+    if isinstance(value, (ColoParameter, torch.nn.Parameter)):
         if params is None:
             raise AttributeError("cannot assign parameters before Module.__init__() call")
         remove_from(self.__dict__, self._buffers, self._modules, self._non_persistent_buffers_set)