[doc] update description.

Author: wangzhaode

README.md

@@ -4,7 +4,7 @@
 ![Build Status](https://github.com/wangzhaode/jinja.cpp/actions/workflows/build.yml/badge.svg)
 [![中文版本](https://img.shields.io/badge/Language-%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87-green)](README_CN.md)
 
-A lightweight, minimal C++11 implementation of the Jinja2 template engine, designed specifically for **LLM Chat Templates** (HuggingFace style).
+A lightweight, single-header C++11 Jinja2 template engine designed for LLM chat templates.
 
 It focuses on supporting the subset of Jinja2 used by modern Large Language Models (LLMs) like Llama 3, Qwen 2.5/3, DeepSeek, and others, enabling seamless inference integration in C++ environments.
 

README_CN.md

@@ -4,7 +4,7 @@
 ![Build Status](https://github.com/wangzhaode/jinja.cpp/actions/workflows/build.yml/badge.svg)
 [![English Version](https://img.shields.io/badge/Language-English-green)](README.md)
 
-一个轻量级、完全兼容 C++11 的 Jinja2 模板引擎实现，专为 **LLM 对话模板** (HuggingFace 风格) 设计。
+> 一个轻量级、单头文件的 C++11 Jinja2 模板引擎，专为 LLM Chat 模板设计。
 
 它专注于支持现代大语言模型 (如 Llama 3, Qwen 2.5/3, DeepSeek 等) 所需的 Jinja2 语法子集，使得在 C++ 环境中进行推理集成变得无缝且高效。
 

jinja.hpp

@@ -1,5 +1,5 @@
 /*
- jinja.hpp - A lightweight C++11 Jinja2 template engine for LLM chat templates.
+ jinja.hpp - A lightweight, single-header C++11 Jinja2 template engine for LLM chat templates.
  https://github.com/wangzhaode/jinja.cpp
 
  Licensed under the Apache License, Version 2.0 (the "License");