Update free-courses-hi.md (#8362)

Added a youtube tutorial on Networking.

courses/free-courses-hi.md

@@ -344,6 +344,7 @@
 
 * [3.4 Computer Networks (Complete Playlist)](https://www.youtube.com/playlist?list=PLmXKhU9FNesSjFbXSZGF8JF_4LVwwofCd) - Knowledge Gate
 * [Computer Networks (Complete Playlist)](https://www.youtube.com/playlist?list=PLxCzCOWd7aiGFBD2-2joCpWOLUrDLvVV_) - Gate Smashers, `tch.:` Varun Singla
+* [Networking Basics](https://www.youtube.com/playlist?list=PLkW9FMxqUvyZaSQNQslneeODER3bJCb2K) - Bitten Tech
 
 
 ### Operating Systems