* Change the level of the bullet points
Changed the level of the bullet points in "A review" section to make it more organized.
* Fix typo of 'Gnu' to 'GNU'
* Add a way to compile and run C programs via Cygwin
I added a section explaining a way to use Cygwin to compile and run C programs.
Keep capitalization consistent in the article's title
Replaced "be able to know" with "become comfortable" to tighten up wording
Replaced "However, they" with "Furthermore, these guides"
Replaced "it" with "the C language"
Replaced "Mac" with "MacOS"
* added " C programming ressources link"
This links to TutorialsPoint which is a good ressource for most of the programming languages
* Added "Unordered list for the tutorial element"