- Updated the directory structure for English documentation to be placed in `en/` subdirectories across cheatsheets, built-in functions, modules, and blog sections.
- Revised contributing guidelines to emphasize the new structure for adding English documentation and clarified that translations for other languages will be handled automatically during deployment.
- Removed the `subprocess-module.md` file as part of the documentation cleanup.

This update aims to improve organization and clarity in the documentation for contributors and users.