Update free-courses-hi.md- Added a course for DSA in C (#9830)

courses/free-courses-hi.md

@@ -71,6 +71,7 @@
 * [Binary Search \| Interview Questions \| Coding \| Tutorials \| Algorithm](https://www.youtube.com/playlist?list=PL_z_8CaSLPWeYfhtuKHj-9MpYb6XQJ_f2) - Aditya Verma
 * [Binary Trees - Level 1](https://www.youtube.com/playlist?list=PL-Jc9J83PIiHYxUk8dSu2_G7MR1PaGXN4) - Pepcoding
 * [Bit Manipulation - Level 2](https://youtube.com/playlist?list=PL-Jc9J83PIiFJRioti3ZV7QabwoJK6eKe) - Pepecoding
+* [Data Structures and Algorithms Course in Hindi](https://www.youtube.com/playlist?list=PLu0W_9lII9ahIappRPN0MCAgtOu3lQjQi) - CodeWithHarry
 * [Data Structures and Algorithms in Python](https://www.youtube.com/playlist?list=PLyMom0n-MBrpakdIZvnhd6PFUCKNAyKo1) - Jovian
 * [Design And Analysis Of Algorithms](https://youtube.com/playlist?list=PLxCzCOWd7aiHcmS4i14bI0VrMbZTUvlTa) - Gate Smashers
 * [Dynamic Programming Playlist \| Coding \| Interview Questions \| Tutorials \| Algorithm](https://www.youtube.com/playlist?list=PL_z_8CaSLPWekqhdCPmFohncHwz8TY2Go) - Aditya Verma