Added MDN article (#1359)

content/roadmaps/100-frontend/content/100-internet/100-how-does-the-internet-work.md

@@ -5,6 +5,7 @@ The Internet is a global network of computers connected to each other which comm
 <ResourceGroupTitle>Free Content</ResourceGroupTitle>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.vox.com/2014/6/16/18076282/the-internet'>The Internet Explained</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='http://web.stanford.edu/class/msande91si/www-spr04/readings/week1/InternetWhitepaper.htm'>How Does the Internet Work?</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://developer.mozilla.org/en-US/docs/Learn/Common_questions/How_does_the_Internet_work'>How Does the Internet Work? MDN Docs</BadgeLink>
 <BadgeLink badgeText='Watch' href='/guides/what-is-internet'>Introduction to Internet</BadgeLink>
 <BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=TNQsmPf24go'>How does the Internet work?</BadgeLink>
 <BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=7_LPdttKXPc'>How the Internet Works in 5 Minutes</BadgeLink>