docs: add `RockChinQ/LangBot` to integrations list (#9272)

README.md

@@ -385,6 +385,7 @@ See the [API documentation](./docs/api.md) for all endpoints.
 - [AntSK](https://github.com/AIDotNet/AntSK) (Out-of-the-box & Adaptable RAG Chatbot)
 - [MaxKB](https://github.com/1Panel-dev/MaxKB/) (Ready-to-use & flexible RAG Chatbot)
 - [yla](https://github.com/danielekp/yla) (Web interface to freely interact with your customized models)
+- [LangBot](https://github.com/RockChinQ/LangBot) (LLM-based instant messaging bots platform, with Agents, RAG features, supports multiple platforms)
 
 ### Cloud