docs: 更新 2026 年 2 月捐赠记录及 badge (#537)

- 更新 2 月捐出金额 ¥310，捐赠给腾讯慈善「重疾儿童协助」
- 累计捐赠更新为 ¥1610
- 截图格式统一为 HTML table 并排展示
- 同步更新 README/README_EN 的善款已捐 badge

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -4,7 +4,7 @@
 [![All Contributors](https://img.shields.io/badge/all_contributors-26-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
-[![善款已捐](https://img.shields.io/badge/善款已捐-CNY%201300.00-brightgreen?style=flat-square)](./DONATIONS.md)
+[![善款已捐](https://img.shields.io/badge/善款已捐-CNY%201610.00-brightgreen?style=flat-square)](./DONATIONS.md)
 [![爱心汇聚](https://img.shields.io/badge/爱心汇聚-CNY%201285.92-blue?style=flat-square)](./DONATIONS.md)
 [![Docker Pulls](https://img.shields.io/docker/pulls/xpzouying/xiaohongshu-mcp?style=flat-square&logo=docker)](https://hub.docker.com/r/xpzouying/xiaohongshu-mcp)