Update free-courses-bn.md (#9039)

courses/free-courses-bn.md

@@ -53,6 +53,7 @@
 
 * [C - All you need to know](https://www.youtube.com/playlist?list=PL_XxuZqN0xVASsjyqiNzgjUWHbDkN2Scy) - Stack Learner
 * [C Programming Bangla Tutorial Course](https://www.youtube.com/playlist?list=PLgH5QX0i9K3pCMBZcul1fta6UivHDbXvz) - Anisul Islam
+* [C Programming Bangla Tutorial](https://youtube.com/playlist?list=PLdl6zXgLsy3zwNjSMiYlOZOr20sykTfgo) - Bangla Coding Tutor
 * [Pattern Printing in C](https://www.youtube.com/playlist?list=PLgH5QX0i9K3oTxQhx2kejYmQn6qtRULCD) - Anisul Islam