docs: add mistral badge

README.md

@@ -7,8 +7,9 @@
 
 [![Open project in GitHub Codespaces](https://img.shields.io/badge/Codespaces-Open-blue?style=flat-square&logo=github)](https://codespaces.new/Azure-Samples/serverless-chat-langchainjs?hide_repo_select=true&ref=main)
 ![Node version](https://img.shields.io/badge/Node.js->=20-grass?style=flat-square)
+[![Ollama + Mistral](https://img.shields.io/badge/Ollama-Mistral-ff7000?style=flat-square)](https://ollama.com/library/mistral)
 [![TypeScript](https://img.shields.io/badge/TypeScript-blue?style=flat-square&logo=typescript&logoColor=white)](https://www.typescriptlang.org)
-[![License](https://img.shields.io/badge/License-MIT-orange?style=flat-square)](LICENSE)
+[![License](https://img.shields.io/badge/License-MIT-yellow?style=flat-square)](LICENSE)
 
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