Is your feature request related to a problem? Please describe.
Yes. The current installation instructions in the documentation only show how to install react-admin via npm or yarn, which can be confusing or lead to issues for students or beginners. I personally faced difficulties using that method, and it's not the most straightforward approach for someone trying to get the project running quickly.

Describe the solution you'd like
I’d like to update the documentation and the CONTRIBUTING.md file to include an easier and faster installation method. This method works smoothly and avoids the problems I encountered using the existing instructions. The proposed steps are:

git clone
yarn install
cd react-admin
yarn run-simple

This approach is more accessible for new contributors and ensures the project is set up correctly with fewer steps and complications.

Describe alternatives you've considered

°Keeping the current installation instructions, but they may continue to cause confusion for beginners.
°Adding a troubleshooting section instead, but that doesn’t simplify the process as much as updating the steps directly.

Additional context
This change would make the onboarding process much smoother for students or new contributors. I can provide a pull request to add this to both the main documentation and the CONTRIBUTING.md file if needed.