fix broken arxiv url

fix broken arxiv url for LDM paper

README.md

@@ -9,7 +9,7 @@ tags:
 
 # High-Resolution Image Synthesis with Latent Diffusion Models (LDM)
 
-**Paper**: [High-Resolution Image Synthesis with Latent Diffusion Models (LDM)s](https://arxiv.org/abs/2112.10752239)
+**Paper**: [High-Resolution Image Synthesis with Latent Diffusion Models (LDM)s](https://arxiv.org/abs/2112.10752)
 
 **Abstract**: