Merge pull request #85 from Shaoting-Feng/a

[Doc] Fix README section

Author: Hanchenli

README.md

@@ -6,6 +6,8 @@
 - 🛤️ 2025 Q1 Road Map Released! Join the discussion [here](https://github.com/vllm-project/production-stack/issues/26)!
 - 🔥 vLLM Production Stack is released! Checkout our [release blogs](https://blog.lmcache.ai/2025-01-21-stack-release) [01-22-2025]
 
+## Introduction
+
 **vLLM Production Stack** project provides a reference implementation on how to build an inference stack on top of vLLM, which allows you to:
 
 - 🚀 Scale from single vLLM instance to distributed vLLM deployment without changing any application code