Add arXiv page link

Add link to arXiv page

README.md

@@ -52,7 +52,7 @@ Please check our [tech report](https://stable-fast-3d.github.io/static/paper.pdf
 * **Tech report**: https://stability.ai/s/SF3D-10.pdf
 * **Video summary**: https://youtu.be/uT96UCBSBko
 * **Project page**: https://stable-fast-3d.github.io
-* **arXiv page**: soon
+* **arXiv page**: https://arxiv.org/abs/2408.00653
 
 
 ### Training Dataset