added c-sharp heading and two of its courses in free-courses-hi.md (#7355)

* added c-sharp heading and two of its courses

* corrected all caps letters to lowercase(except first)

* Update free-courses-hi.md

* Update free-courses-hi.md

courses/free-courses-hi.md

@@ -7,6 +7,7 @@
 * [Bash and Shell](#bash-and-shell)
 * [Blockchain](#blockchain)
 * [C](#c)
+* [C#](#csharp)
 * [C++](#cpp)
 * [Compiler Design](#compiler-design)
 * [Computer Organization and Architecture](#computer-organization-and-architecture)
@@ -92,6 +93,12 @@
 * [C Programming Tutorials](https://www.youtube.com/playlist?list=PLiOa6ike4WAHH3HyPUu6pUG-r0LApvW-l) - Vikas Pandey, easytuts4you
 
 
+### <a id="csharp"></a>C\#
+
+* [C# Programming language (Console Applications)](https://www.youtube.com/playlist?list=PLX07l0qxoHFLZftsVKyj3k9kfMca2uaPR) - Learning Never Ends 
+* [C# Tutorial In Hindi](https://www.youtube.com/watch?v=SuLiu5AK9Ps) - CodeWithHarry
+
+
 ### <a id="cpp"></a>C++
 
 * [C++ Full Course \| C++ Tutorial \| Data Structures & Algorithms](https://www.youtube.com/playlist?list=PLfqMhTWNBTe0b2nM6JHVCnAkhQRGiZMSJ) - Apna College