Change documentation URL in README

Updated the documentation URL to the new site.

Author: echo-yiyiyi

README.md

@@ -320,7 +320,7 @@ The source code is licensed under Apache 2.0.
 [discord-image]: https://img.shields.io/discord/1082486657678311454?logo=discord&labelColor=%20%235462eb&logoColor=%20%23f5f5f5&color=%20%235462eb
 [discord-url]: https://discord.camel-ai.org/
 [docs-image]: https://img.shields.io/badge/Documentation-EB3ECC
-[docs-url]: https://camel-6d2d1ad0.mintlify.app/introduction
+[docs-url]: https://docs.oasis.camel-ai.org/
 [huggingface-image]: https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-CAMEL--AI-ffc107?color=ffc107&logoColor=white
 [huggingface-url]: https://huggingface.co/camel-ai
 [oasis-image]: https://img.shields.io/badge/WeChat-OASISProject-brightgreen?logo=wechat&logoColor=white