docs:飞致云学堂改为飞致云培训认证中心

Author: luyang351

docs/index.md

@@ -835,4 +835,4 @@
     - **如何向团队介绍 DataEase？：** https://dataease.io/download/introduce-dataease_202409.pdf
     - **获取新一代数据可视化分析平台建设指南：** https://fit2cloud.com/whitepaper/dataease-whitepaper_202203.pdf
     - **DataEase 知识库：** https://kb.fit2cloud.com/categories/dataease
-    - **飞致云学堂：** https://edu.fit2cloud.com/index 
+    - **飞致云培训认证中心：** https://edu.fit2cloud.com/index