Markdown (.md) is a lightweight and easy-to-use syntax for styling all forms of writing on the GitHub platform. It used to control the display of the document; formatting words as bold or italic, adding images, and creating lists…etc.
• Examples:
Text: boldbold, italicitalic, crossed out word, [link name] (link address).
SHA references: Any reference to a commit’s SHA-1 hash will be automatically converted into a link to that commit on GitHub.
Issue references within a repository: Any number that refers to an Issue or Pull Request will be automatically converted into a link.
Automatic linking for URLs.
What is GitHub Pages?
GitHub Pages is a static site hosting service that takes HTML, CSS, and JavaScript files straight from a repository on GitHub, optionally runs the files through a build process, and publishes a website.