fix: remove THU SIGS abbreviation and fix contributors link anchor

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: sanbuphy

docs/en/stage-1/learning-map/index.md

@@ -6,7 +6,7 @@ description: 'Complete roadmap for learning AI programming: from zero basics to
 # From Idea to AI Product
 
 ::: info Special Thanks
-Special thanks to the students from **Tsinghua University Shenzhen International Graduate School (THU SIGS)** for their testing, feedback, and support for this course! Your contributions and suggestions have made this course better. [👉 View full contributors list](https://github.com/datawhalechina/easy-vibe#contributing--contributors)
+Special thanks to the students from **Tsinghua University Shenzhen International Graduate School** for their testing, feedback, and support for this course! Your contributions and suggestions have made this course better. [👉 View full contributors list](https://github.com/datawhalechina/easy-vibe#-contributing--contributors)
 :::
 
 In the past, building software had a high barrier: you had to understand programming and algorithms and have years of project experience.

docs/zh-cn/stage-1/learning-map/index.md

@@ -12,7 +12,7 @@ const relatedArticles = relatedArticlesMap['zh-cn/stage-1/learning-map'] ?? []
 # 从创意到 AI 产品
 
 ::: info 特别感谢
-特别感谢来自 **清华大学深圳国际研究生院（THU SIGS）** 的同学们对本课程的测试、反馈和支持！你们的意见和贡献让这门课程变得更好。[👉 查看完整贡献者名单](https://github.com/datawhalechina/easy-vibe#contributing--contributors)
+特别感谢来自 **清华大学深圳国际研究生院** 的同学们对本课程的测试、反馈和支持！你们的意见和贡献让这门课程变得更好。[👉 查看完整贡献者名单](https://github.com/datawhalechina/easy-vibe#-contributing--contributors)
 :::
 
 以前做软件，门槛很高：你要懂编程、懂算法，还得有几年的项目经验。