Update README_cn.md

Author: yt605155624

README_cn.md

@@ -147,7 +147,7 @@ from https://github.com/18F/open-source-guide/blob/18f-pages/pages/making-readme
 
 <div align="center"><a href="https://www.bilibili.com/video/BV1cL411V71o?share_source=copy_web"><img src="https://ai-studio-static-online.cdn.bcebos.com/06fd746ab32042f398fb6f33f873e6869e846fe63c214596ae37860fe8103720" / width="500px"></a></div>
 
-- [PaddleSpeech 投稿 NAACL 2022 Demo Paper 的示例视频](https://paddlespeech.readthedocs.io/en/latest/demo_video.html)
+- [PaddleSpeech 示例视频](https://paddlespeech.readthedocs.io/en/latest/demo_video.html)
 
 
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