add description for tag node-js (#163)

Co-authored-by: Gourav Khunger <[email protected]>

_data/descriptions.yml

@@ -17,3 +17,4 @@ react: "Enhance your frontend skills by learning about most in-demand frontend f
 beginners: "Start your coding journey by learning tech concepts at genics blog to become a pro at software development."
 productivity: "Don't get caught in an endless loop, become a master of developer productivity 🚀" 
 tools: "Enhance your development journey by exploring trending dev-tools."
+node-js : "Learn about Node-JS to build cross platform front-end and back-end applications."