Add 2 kotlin courses on free-courses-id.md (#5674)

* Add 4 course on free-courses-id.md

* fixing linter failed on courses

* add 4 course on free-courses-id.md

* remove kotlin free course on free-courses-id.md

* remove unused line on kotlin

* add 2 kotlin resources on free-courses-id.md

* fixing number of lines on end of section

Co-authored-by: Muhamad Arif Ar Rijal <>

courses/free-courses-id.md

@@ -196,6 +196,8 @@
 * [Belajar Kotlin Unit Test](https://www.youtube.com/playlist?list=PL-CtdCApEFH8HoTBUpYgQ-Q45U54Tn_up) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
 * [Fungsi pada Kotlin](https://www.youtube.com/playlist?list=PLCZlgfAG0GXCqFIOudYt5icvdCnkA8FVe) - Sekolah Koding
 * [Kotlin Collection](https://www.youtube.com/playlist?list=PLCZlgfAG0GXCZWnGxjnZwAsnDthoas1O1) - Sekolah Koding
+* [Kotlin Object Oriented Programming Bahasa Indonesia](https://www.youtube.com/playlist?list=PLe8n__MJ2In54a_2j-Yh_Oz-ZGTauziwf) - Kelas Coding (YouTube)
+* [Tutorial Kotlin Android Studio 2020 Bahasa Indonesia](https://www.youtube.com/playlist?list=PLFVTikutopLZe6N6wHrrNDizfnxwoeg92) - Lazday Indonesia (YouTube)
 
 
 ### Kubernetes