Add Markdown link parsing support

[omalk98]

Requesting to add markdown link parsing feature.
This feature will process markdown files only and convert any pattern that matches [*](*) and convert it to the appropriate <a> tag in HTML.
The feature will require modification to the generateHTMLforMdFile() function to make it work.

[sdthaker]

Approved, Please file a PR when done and link the issue with the PR.