Update README.md

README.md

@@ -47,7 +47,7 @@ This is a merged model that uses many checkpoints. Many of the models used does
 
 ### CoharuMix_v3.0
 <details><summary>Sample</summary>
-<img src="https://huggingface.co/hhks/CoharuMix/resolve/main/coharumix_v30.preview.png"></img></details>
+<img src="https://huggingface.co/hhks/CoharuMix/resolve/main/coharumix_v30.preview.jpg"></img></details>
 
 ### CoharuMix_Anime2.5D
 <details><summary>Sample</summary>