fix links about papers

README.md

@@ -156,7 +156,7 @@ supported_optimizers = get_supported_optimizers()
 | LOMO         | *Full Parameter Fine-tuning for Large Language Models with Limited Resources*                     | [github](https://github.com/OpenLMLab/LOMO)                                                                    | <https://arxiv.org/abs/2306.09782>                                                         | [cite](https://github.com/OpenLMLab/LOMO#citation)                                                                |
 | Tiger        | *A Tight-fisted Optimizer, an optimizer that is extremely budget-conscious*                       | [github](https://github.com/bojone/tiger)                                                                      |                                                                                            | [cite](https://github.com/bojone/tiger/blob/main/README_en.md#citation)                                           |
 | CAME         | *Confidence-guided Adaptive Memory Efficient Optimization*                                        | [github](https://github.com/huawei-noah/Pretrained-Language-Model/tree/master/CAME)                            | <https://aclanthology.org/2023.acl-long.243/>                                              | [cite](https://github.com/huawei-noah/Pretrained-Language-Model/tree/master/CAME#citation)                        |
-| WSAM         | *Sharpness-Aware Minimization Revisited: Weighted Sharpness as a Regularization Term*             | [github](https://github.com/intelligent-machine-learning/dlrover/blob/master/atorch/atorch/optimizers/wsam.py) | <https://arxiv.org/abs/2305.1581>                                                          | [cite](https://github.com/intelligent-machine-learning/dlrover)                                                   |
+| WSAM         | *Sharpness-Aware Minimization Revisited: Weighted Sharpness as a Regularization Term*             | [github](https://github.com/intelligent-machine-learning/dlrover/blob/master/atorch/atorch/optimizers/wsam.py) | <https://arxiv.org/abs/2305.15817>                                                          | [cite](https://github.com/intelligent-machine-learning/dlrover)                                                   |
 
 ## Supported LR Scheduler