Update README

README.md

@@ -13,7 +13,7 @@ library_name: diffusers
 
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-[**Project Page**](https://tenvence.github.io/p/v-express/) **|** [**Paper (ArXiv)**]() **|** [**Code**](https://github.com/tencent-ailab/V-Express)
+[**Project Page**](https://tenvence.github.io/p/v-express/) **|** [**Paper (ArXiv)**](https://tenvence.github.io/p/v-express/) **|** [**Code**](https://github.com/tencent-ailab/V-Express)
 
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