Update README.md

README.md

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 ## Contributions
 This project is the result of a collaborative effort：
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 Ning Xu<sup>1,2</sup> &nbsp;&nbsp; Zhaoyang Zhang<sup>1,2</sup> &nbsp;&nbsp; Lei Qi<sup>1,2</sup> &nbsp;&nbsp; Wensuo Wang<sup>1</sup> &nbsp;&nbsp; Chao Zhang<sup>1</sup> &nbsp;&nbsp; Zihao Ren<sup>2</sup> <br>
 Huaiyuan Zhang<sup>2</sup> &nbsp;&nbsp; Xin Cheng<sup>2</sup> &nbsp;&nbsp; Yanqi Zhang<sup>2</sup> &nbsp;&nbsp; Zhichao Liu<sup>2</sup> &nbsp;&nbsp; Qingwen Wei<sup>2</sup> &nbsp;&nbsp; Shiyang Wu<sup>2</sup> <br>
 Lanlan Yang<sup>2</sup> &nbsp;&nbsp; Xin Geng<sup>2</sup> &nbsp;&nbsp; Jun Yang<sup>1,2</sup> 
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 <sup>1</sup>National Center of Technology Innovation for EDA, Nanjing, China <br>
 <sup>2</sup>Southeast University, Nanjing, China
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