Add MDN resources for hosting (#3436)

this articles explain very good the term and explain with clarity

src/roadmaps/backend/content/100-internet/105-what-is-hosting.md

@@ -7,3 +7,5 @@ Visit the following resources to learn more:
 - [What Is Web Hosting? Explained](https://www.youtube.com/watch?v=htbY9-yggB0)
 - [Different Types of Web Hosting Explained](https://www.youtube.com/watch?v=AXVZYzw8geg)
 - [Where to Host a Fullstack Project on a Budget](https://www.youtube.com/watch?v=Kx_1NYYJS7Q)
+- [What is the difference between webpage, website, web server, and search engine?](https://developer.mozilla.org/en-US/docs/Learn/Common_questions/Web_mechanics/Pages_sites_servers_and_search_engines)
+- [What is a web server?](https://developer.mozilla.org/en-US/docs/Learn/Common_questions/Web_mechanics/What_is_a_web_server)