books

What does this PR do?

Improve repo

For resources

Description

Added a small definition about programming/coding playgrounds for making it understandable to beginners

Why is this valuable (or not)?

Copy the definition merged in #6822 into the rest of CONTRIBUTING files, opening a 3 weeks window to translate it by our comunity

Checklist:

• Read our [contribu

👋👋 Hello Hacktoberfest contributors

if you are looking to contribute to Mind-Expanding Books, I would recommend focusing on improving the website which can be accessed at http://books.vishnuks.com/ (soon to get its own domain). The source code lives in /app directory.

There are a ton of improvements that can be made to the website. I have some issues opened at https://github.com/hackerki

This is a fairly prominently displayed feature on the homepage so it would be good to get this out quickly if the fix is easy

Evidence / Screenshot (if possible)

![openlibrary org_ (2)](https://user-images.githubusercontent.com/978325/172922531-d2872dfd-d170-4a37-ac7d-11155ebaf1ad.pn