Improved structure and highlighted important items

[Abhinav-Chdhary]

Description

I believe that a structured documentation is much more appealing and understandable from a reader's point of view and so I have listed the features in an organized manner and explained them in a simple manner. I have also highlighted some important terms as I felt that they were important to be noticed first, which in turn would prompt the readers to read the entire documentation.

• Issue reference:Issue Documentation📄: 'Understanding FLINT' needs to be more structured #210
• Subject Matter Expert (SME) reviewer: NA
• Peer reviewer: @HarshCasper @chicken-biryani
• Preview Links: https://moja-global-docs.readthedocs.io/en/latest/FLINT/UnderstandingFLINT/index.html
• Explain the changes: Added subheadings for each feature and explained all the features in easy-to-understand language. Also, highlighted important terms that need more attention.
• Dependency changes: N

This is my first time trying to contribute in a proper manner. Do let me know what do you think about my changes and what improvements I should make! Thanks in advance!

Thanks for opening the Pull Request for moja global. Happy contributing ✨