Update free-courses-hi.md (#8347)

Added a course for tailwind css

courses/free-courses-hi.md

@@ -229,6 +229,7 @@
 
 #### Tailwind CSS
 
+* [Tailwind CSS In Hindi](https://www.youtube.com/playlist?list=PLwGdqUZWnOp3l8tWTcB7R7Bsgd86lCa8a) - Thapa Technical
 * [Tailwind CSS Tutorials in Hindi](https://www.youtube.com/playlist?list=PLu0W_9lII9ahwFDuExCpPFHAK829Wto2O) - CodeWithHarry