docs: update README

- replace badge links with NPM Downloads and improve link text for clarity

Author: jinzcdev

README.md

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 # LeetCode MCP Server
 
 [![NPM Version](https://img.shields.io/npm/v/@jinzcdev/leetcode-mcp-server.svg)](https://www.npmjs.com/package/@jinzcdev/leetcode-mcp-server)
-[![GitHub License](https://img.shields.io/github/license/jinzcdev/leetcode-mcp-server.svg)](https://img.shields.io/github/license/jinzcdev/leetcode-mcp-server.svg)
-[![smithery badge](https://smithery.ai/badge/@jinzcdev/leetcode-mcp-server)](https://smithery.ai/server/@jinzcdev/leetcode-mcp-server)
-[![Chinese Doc](https://img.shields.io/badge/简体中文-点击查看-orange)](README_zh-CN.md)
+[![NPM Downloads](https://img.shields.io/npm/dm/@jinzcdev/leetcode-mcp-server.svg)](https://www.npmjs.com/package/@jinzcdev/leetcode-mcp-server)
+[![GitHub License](https://img.shields.io/github/license/jinzcdev/leetcode-mcp-server.svg)](./LICENSE)
+[![Chinese Doc](https://img.shields.io/badge/简体中文-查看-orange)](README_zh-CN.md)
 [![Stars](https://img.shields.io/github/stars/jinzcdev/leetcode-mcp-server)](https://github.com/jinzcdev/leetcode-mcp-server)
 
 The LeetCode MCP Server is a [Model Context Protocol (MCP)](https://modelcontextprotocol.io/introduction) server that provides seamless integration with LeetCode APIs, enabling advanced automation and intelligent interaction with LeetCode's programming problems, contests, solutions, and user data.

README_zh-CN.md

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 # LeetCode MCP 服务器
 
 [![NPM Version](https://img.shields.io/npm/v/@jinzcdev/leetcode-mcp-server.svg)](https://www.npmjs.com/package/@jinzcdev/leetcode-mcp-server)
-[![GitHub License](https://img.shields.io/github/license/jinzcdev/leetcode-mcp-server.svg)](https://www.npmjs.com/package/@jinzcdev/leetcode-mcp-server)
-[![smithery badge](https://smithery.ai/badge/@jinzcdev/leetcode-mcp-server)](https://smithery.ai/server/@jinzcdev/leetcode-mcp-server)
-[![English Doc](https://img.shields.io/badge/English-Click-blue)](README.md)
+[![NPM Downloads](https://img.shields.io/npm/dm/@jinzcdev/leetcode-mcp-server.svg)](https://www.npmjs.com/package/@jinzcdev/leetcode-mcp-server)
+[![GitHub License](https://img.shields.io/github/license/jinzcdev/leetcode-mcp-server.svg)](./LICENSE)
+[![English Doc](https://img.shields.io/badge/English-View-orange)](README.md)
 [![Stars](https://img.shields.io/github/stars/jinzcdev/leetcode-mcp-server)](https://github.com/jinzcdev/leetcode-mcp-server)
 
 LeetCode MCP Server 是一个基于 [模型上下文协议 (MCP)](https://modelcontextprotocol.io/introduction) 的服务，提供与 LeetCode API 的无缝集成，实现与 LeetCode 编程题目、竞赛、题解和用户数据的高级自动化和智能交互。