🎯Added a resource - (YouTube Video) (#1001)

✌️Added a youtube video as a watchable resource I found very useful and enough. I think knowing that much about how the browsers work is enough for the Front-end journey. The video covered all the important topics from User-Interface to Rendering Engine.

content/roadmaps/100-frontend/content/100-internet/102-browsers-and-how-they-work.md

@@ -6,3 +6,4 @@ A web browser is a software application that enables a user to access and displa
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.html5rocks.com/en/tutorials/internals/howbrowserswork/'>How Browsers Work</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.browserstack.com/guide/browser-rendering-engine'>Role of Rendering Engine in Browsers</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://developer.mozilla.org/en-US/docs/Web/Performance/How_browsers_work'>Populating the Page: How Browsers Work</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=WjDrMKZWCt0'>How Do Web Browsers Work?</BadgeLink>