Update README

README.en.md

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 An online judge system for algorithm competition.
 
-This project is the **official** successor and rewritten version of the original Python/Flask version of SYZOJ, which is authorized by the original author [@Chenyao2333](https://github.com/Chenyao2333).
+This project is based on [@Chenyao2333](https://github.com/Chenyao2333)'s [SYZOJ](https://github.com/Zhengzhou-11-Highschool/syzoj). Currently maintained by [LibreOJ](https://loj.ac).
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-Currently maintained by [LibreOJ](https://loj.ac).
 
 # Deploying
 Currently, the tutorial for deploying is only available in Chinese. It's [部署指南](https://github.com/syzoj/syzoj/wiki/%E9%83%A8%E7%BD%B2%E6%8C%87%E5%8D%97) in this project's wiki.

README.md

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 一个用于算法竞赛的在线评测系统。
 
-此项目为重写过的、原 Python/Flask 版 SYZOJ 的**官方**后继版本，由原作者 [@Chenyao2333](https://github.com/Chenyao2333) 授权。
+本项目继承自 [@Chenyao2333](https://github.com/Chenyao2333) 的 [SYZOJ](https://github.com/Zhengzhou-11-Highschool/syzoj)，目前由 [LibreOJ](https://loj.ac) 维护。
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-目前由 [LibreOJ](https://loj.ac) 维护。
 
 # 部署
 见本项目 Wiki 中的 [部署指南](https://github.com/syzoj/syzoj/wiki/%E9%83%A8%E7%BD%B2%E6%8C%87%E5%8D%97)。