update paper title

Author: TsingZ0

README.md

@@ -18,7 +18,7 @@ Figure 1: An Example for FedAvg. You can create a scenario using `generate_DATA.
 
 ```
 @article{zhang2023pfllib,
-  title={PFLlib: Personalized Federated Learning Algorithm Library},
+  title={PFLlib: A Beginner-Friendly and Comprehensive Personalized Federated Learning Library and Benchmark},
   author={Zhang, Jianqing and Liu, Yang and Hua, Yang and Wang, Hao and Song, Tao and Xue, Zhengui and Ma, Ruhui and Cao, Jian},
   journal={arXiv preprint arXiv:2312.04992},
   year={2023}

docs/docs.html

@@ -214,7 +214,7 @@ <h2>Acknowledgement</h2>
                 <p>If you find our PFLlib useful, please cite its corresponding paper</p>
                 <pre>
 @article{zhang2023pfllib,
-    title={PFLlib: Personalized Federated Learning Algorithm Library},
+    title={PFLlib: A Beginner-Friendly and Comprehensive Personalized Federated Learning Library and Benchmark},
     author={Zhang, Jianqing and Liu, Yang and Hua, Yang and Wang, Hao and Song, Tao and Xue, Zhengui and Ma, Ruhui and Cao, Jian},
     journal={arXiv preprint arXiv:2312.04992},
     year={2023}