Update README.md

Author: Logende

README.md

@@ -57,7 +57,7 @@ Creating structured data files (or schemas) manually can be complex and error-pr
 
 *   **Code Generation** – Generate source code from JSON schemas in multiple programming languages (Python, Rust, TypeScript, C++, Java, etc.) using [quicktype](https://github.com/glideapps/quicktype/).
 
-*   **Documentation Generation** – Generate documentation from JSON schemas, with export to a Markdown file.
+*   **Documentation Generation** (experimental) – Generate documentation from JSON schemas, with export to a Markdown file.
 
 🛠️ Development
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