fix: correct CCPM installation package name in skills-search

Fixes #4

- Change npm package from @anthropic/ccpm to @daymade/ccpm
- @anthropic/ccpm does not exist (npm returns 404)
- @daymade/ccpm is the correct package (version 0.2.1)
- Add link to CCPM official website (https://ccpm.dev)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

skills-search/SKILL.md

@@ -164,9 +164,11 @@ Common skills users may want:
 
 Install CCPM globally:
 ```bash
-npm install -g @anthropic/ccpm
+npm install -g @daymade/ccpm
 ```
 
+For more information, visit [CCPM official website](https://ccpm.dev).
+
 ### Skill not available after install
 
 Restart Claude Code - skills are loaded at startup.