Merge pull request #124 from FederatedAI/feature-2.2.0-update_doc

update readme to pdss docs

doc/tutorial/pdss/README.md

@@ -0,0 +1,13 @@
+# FATE-LLM: PDSS
+The Algorithm is based on paper ["PDSS: A Privacy-Preserving Framework for Step-by-Step Distillation of Large Language Models"](https://arxiv.org/pdf/2406.12403), which introduce a novel framework for privacy preserving federated distillation. We integrate its code into the FATE-LLM framework.
+
+## Citation
+If you publish work that uses PDSS, please cite PDSS as follows:
+```
+@article{fan2024pdss,
+  title={PDSS: A Privacy-Preserving Framework for Step-by-Step Distillation of Large Language Models},
+  author={Fan, Tao and Kang, Yan and Chen, Weijing and Gu, Hanlin and Song, Yuanfeng and Fan, Lixin and Chen, Kai and Yang, Qiang},
+  journal={arXiv preprint arXiv:2406.12403},
+  year={2024}
+}
+```