Merge pull request d-run#242 from samzong/fix/zestu-marketing

✏️ fix(image): update image name

Author: samzong

docs/zh/docs/zestu/images/gpumarket.PNG docs/zh/docs/zestu/images/gpu-market.pngdocs/zh/docs/zestu/images/gpumarket.PNG renamed to docs/zh/docs/zestu/images/gpu-market.png

@@ -18,6 +18,6 @@ hide:
 
 点击 **立即购买** 即可前往[创建容器实例](instance.md)。
 
-![算力市场](images/gpumarket.png)
+![算力市场](images/gpu-market.png)
 
 [注册并体验 d.run](https://console.d.run/){ .md-button .md-button--primary }