feat: add http resource (#8909)

Add awsome article about HTTTP

src/data/roadmaps/backend/content/what-is-http@R12sArWVpbIs_PHxBqVaR.md

@@ -10,3 +10,4 @@ Visit the following resources to learn more:
 - [@course@Full HTTP Networking Course](https://www.youtube.com/watch?v=2JYT5f2isg4)
 - [@video@HTTP/1 to HTTP/2 to HTTP/3](https://www.youtube.com/watch?v=a-sBfyiXysI)
 - [@video@SSL, TLS, HTTPS Explained](https://www.youtube.com/watch?v=j9QmMEWmcfo)
+- [@article@Every thing you need to know about HTTP](https://www3.ntu.edu.sg/home/ehchua/programming/webprogramming/HTTP_Basics.html)