Update README.md

README.md

@@ -71,11 +71,11 @@ We adopt a **Scalable Single-Stream DiT** (S3-DiT) architecture. In this setup,
 ![Architecture of Z-Image and Z-Image-Edit](assets/architecture.webp)
 
 ### 📈 Performance
-According to the Elo-based Human Preference Evaluation (on [AI Arena](https://aiarena.alibaba-inc.com/corpora/arena/leaderboard?arenaType=T2I)), Z-Image-Turbo shows highly competitive performance against other leading models, while achieving state-of-the-art results among open-source models.
+According to the Elo-based Human Preference Evaluation (on [*Alibaba AI Arena*](https://aiarena.alibaba-inc.com/corpora/arena/leaderboard?arenaType=T2I)), Z-Image-Turbo shows highly competitive performance against other leading models, while achieving state-of-the-art results among open-source models.
 
 <p align="center">
   <a href="https://aiarena.alibaba-inc.com/corpora/arena/leaderboard?arenaType=T2I">
-    <img src="assets/leaderboard.webp" alt="Z-Image Elo Rating on AI Arena"/><br />
+    <img src="assets/leaderboard.png" alt="Z-Image Elo Rating on AI Arena"/><br />
     <span style="font-size:1.05em; cursor:pointer; text-decoration:underline;"> Click to view the full leaderboard</span>
   </a>
 </p>