Add python di prograte course in bahasa (#4041)

* add python di prograte course in bahasa

* add c# course in bahasa

* delete python no playlist course

* fixing index c# in course bahasa

free-courses-id.md

@@ -2,6 +2,7 @@
 
 * [Android](#android)
 * [C / C++](#c--c)
+* [C#](#c)
 * [Dart](#dart)
 * [Docker](#docker)
 * [Flutter](#flutter)
@@ -39,6 +40,11 @@
 * [Belajar C++ Bahasa Indonesia (Dasar)](https://www.youtube.com/playlist?list=PLZS-MHyEIRo4Ze0bbGB1WKBSNMPzi-eWI) - Kelas Terbuka
 
 
+### C#
+
+* [Belajar Pemrograman C#](https://www.youtube.com/playlist?list=PLuGFxya63u253zhOzhxanaSBNJ_UiIhUb) - Galih Pratama
+
+
 ### Dart
 
 * [Belajar Bahasa Pemgrograman Dart](https://www.youtube.com/playlist?list=PLsvN_QZnFWRBQRFBo46R9hAYcnmvLSIvF) - Kenari Studio