Update README files to replace demo video link with a direct URL for improved accessibility.

Author: 666ghj

README-EN.md

@@ -29,7 +29,7 @@ From serious predictions to playful simulations, we let every "what if" see its
 ## 🎬 Demo Videos
 
 <div align="center">
-<a href="https://www.bilibili.com/"><img src="./static/image/武大模拟演示封面.png" alt="MiroFish Demo Video" width="75%"/></a>
+<a href="https://www.bilibili.com/video/BV1VYBsBHEMY/"><img src="./static/image/武大模拟演示封面.png" alt="MiroFish Demo Video" width="75%"/></a>
 
 Complete demo video for prediction using BettaFish-generated "Wuhan University Public Opinion Report"
 </div>

README.md

@@ -30,7 +30,7 @@ MiroFish 致力于打造映射现实的群体智能镜像，通过捕捉个体
 
 
 <div align="center">
-<a href="https://www.bilibili.com/"><img src="./static/image/武大模拟演示封面.png" alt="MiroFish Demo Video" width="75%"/></a>
+<a href="https://www.bilibili.com/video/BV1VYBsBHEMY/"><img src="./static/image/武大模拟演示封面.png" alt="MiroFish Demo Video" width="75%"/></a>
 
 使用微舆BettaFish生成的《武大舆情报告》进行预测的完整演示视频
 </div>