Update 103-nodejs-vs-browser.md (#1683)

* Update 103-nodejs-vs-browser.md

* Update content/roadmaps/107-nodejs/content/100-nodejs-introduction/103-nodejs-vs-browser.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/107-nodejs/content/100-nodejs-introduction/103-nodejs-vs-browser.md

@@ -1 +1,5 @@
-# Nodejs vs browser
+# Nodejs vs Browser
+
+Both the browser and Node.js use JavaScript as their programming language. Building apps that run in the browser is entirely different than building a Node.js application. Even though it's always JavaScript, some key differences make the experience radically different.
+
+<BadgeLink badgeText='Read' colorScheme="yellow" href='https://nodejs.dev/en/learn/differences-between-nodejs-and-the-browser/'>Differences between Node.js and the Browser</BadgeLink>