Update free-courses-hi.md (#10357)

* Update free-courses-hi.md

* Update free-courses-hi.md

* Update courses/free-courses-hi.md

Co-authored-by: Eric Hellman <eric@hellman.net>

* Update free-courses-hi.md

---------

Co-authored-by: Eric Hellman <eric@hellman.net>

courses/free-courses-hi.md

@@ -498,6 +498,7 @@
 
 ### Matlab
 
+* [MATLAB (HINDI) Tutorial Series](https://www.youtube.com/playlist?list=PL6G0RjixRx3xgzxqjRdZIoLLpzhyLFTXk) - WittyRobo
 * [Matlab Complete Course](https://www.youtube.com/watch?v=iS5J4TlLSEM) - Armughan Ali
 * [MATLAB Complete Tutorial in Hindi](https://www.youtube.com/playlist?list=PLjVLYmrlmjGfdIlwG649bdzVHM4iLbD_H) - WsCube Tech