Merge pull request #10 from nitaking/claude/issue-9-20251205-0027

Add CommonMark link to index

Author: nitaking

content/docs/index.mdx

@@ -112,6 +112,7 @@ Reflect.appを利用し、一部をこのサイトでPersonal Wikiとして公
 - [Twelve-Factor App](https://reflect.site/g/nitaking/twelve-factor-app/1a5b1c27a0104f3788225e2b4a79ba2f)
 
 ### Knowledge & Documentation
+- [CommonMark](https://noteplan.co/n/BF751F56-D0DB-4029-92EF-6A8210D9B721)
 - [Nolebase](https://reflect.site/g/nitaking/nolebase/nolebase)
 - [Notion](https://reflect.site/g/nitaking/notion/notion)
 - [Notion CheatSheet](https://reflect.site/g/nitaking/notion-cheatsheet/d2a33564667945b08d2ed6712418bfe0)