add some comments

Signed-off-by: xffxff <[email protected]>

vllm/model_executor/models/aria.py

@@ -471,6 +471,8 @@ def _make_expert_params_mapping(
             ]
         ]
 
+    # Adapted from LlamaModel.load_weights with the modification of adding the
+    # expert_params_mapping
     def load_weights(self, weights: Iterable[Tuple[str,
                                                    torch.Tensor]]) -> Set[str]:
         stacked_params_mapping = [