docs: fix internal/lexers description in CLAUDE.md

The lexers package provides wrapper utilities for Chroma's lexer
registry, not a custom Terraform lexer implementation.

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Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: koki-develop

CLAUDE.md

@@ -56,8 +56,8 @@ goreleaser release --snapshot --clean
 - **internal/formatters/**: Output format processors
   - HTML minification, JSON formatting, SVG optimization
 
-- **internal/lexers/**: Custom syntax highlighters
-  - Terraform lexer implementation
+- **internal/lexers/**: Lexer utilities
+  - Wrapper functions for Chroma's lexer registry
 
 - **internal/prettier/**: Code prettifiers
   - Language-specific formatting (CSS, Go, HTML, JSON, XML, YAML)