[Feat] index.rst: Refactor contents

[gmacario]

Signed-off-by: Macario Gianpaolo gmacario@gmail.com

Closes #

📑 Description

✅ Checks

• [x] My pull request adheres to the code style of this project
• [ ] My code requires changes to the documentation
• [x] I have updated the documentation as required
• [x] All the tests have passed

ℹ Additional Information

[gmacario]

Thanks @alv67 for your review. Merging PR