Add pug content (#1812)

* Update 101-pug.md

* Update content/roadmaps/107-nodejs/content/109-nodejs-template-engines/101-pug.md

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

content/roadmaps/107-nodejs/content/109-nodejs-template-engines/101-pug.md

@@ -1 +1,11 @@
-# Pug
+# Pug
+
+Pug is a JavaScript template engine. It is a high-performance template engine heavily influenced by Haml and implemented with JavaScript for Node.js and browsers. Pug was formerly called Jade.
+
+Pug is a high-performance template engine heavily influenced by Haml and implemented with JavaScript for Node.js and browsers
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='blue' badgeText='Official Website' href='https://pugjs.org/api/getting-started.html'>Getting started wuith PugJs</BadgeLink>
+<BadgeLink badgeText='Course' colorScheme='green' href='https://blog.bitsrc.io/how-to-build-a-node-application-using-a-pug-template-7319ab1bba69?gi=40b338891148'>How to Build a Node Application Using a Pug Template</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=DSp9ExFw3Ig'>Node.js + Express - Tutorial - PugJS Templating Engine</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://zetcode.com/javascript/pugjs/'>Pug.js tutorial</BadgeLink>