fix(docs): correct broken internal links

Fixed relative paths that were pointing to non-existent locations:
- bmgd index: ../../bmm/docs/index.md → ../bmm/index.md
- cis index: ../../bmm/docs/index.md → ../bmm/index.md
- bmm faq: ./README.md → GitHub URL

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

docs/modules/bmgd-bmad-game-dev/index.md

@@ -161,7 +161,7 @@ BMGD Documentation
 
 ### Related Documentation
 
-- **[BMM Documentation](../../bmm/docs/index.md)** - Core BMad Method documentation
+- **[BMM Documentation](../bmm/index.md)** - Core BMad Method documentation
 
 ## Tips for Using This Documentation
 

docs/modules/bmm-bmad-method/faq.md

@@ -510,7 +510,7 @@ Trust your expertise - BMM supports your decisions.
 
 **A:**
 
-1. Search [Complete Documentation](./README.md) for related topics
+1. Search [Complete Documentation](https://github.com/bmad-code-org/BMAD-METHOD/blob/main/README.md) for related topics
 2. Ask in [Discord Community](https://discord.gg/gk8jAdXWmj) (#general-dev)
 3. Open a [GitHub Issue](https://github.com/bmad-code-org/BMAD-METHOD/issues)
 4. Watch [YouTube Tutorials](https://www.youtube.com/@BMadCode)

docs/modules/cis-creative-intelligence-suite/index.md

@@ -142,7 +142,7 @@ CIS workflows integrate with:
 
 ## Related Documentation
 
-- **[BMM Documentation](../../bmm/docs/index.md)** - Core BMad Method documentation
+- **[BMM Documentation](../bmm/index.md)** - Core BMad Method documentation
 
 ---