add angular to free-courses-id.md (#4567)

free-courses-id.md

@@ -16,6 +16,7 @@
 * [JavaScript](#javascript)
   * [React](#react)
   * [Vue](#vue)
+  * [Angular](#angular)
 * [Kotlin](#kotlin)
 * [Kubernetes](#kubernetes)
 * [Linux](#Linux)
@@ -141,6 +142,11 @@
 * [Tutorial VueJs dengan API Bahasa Indonesia](https://www.youtube.com/playlist?list=PLIan8aHxsPj3a7oLHb2a8pw8IHBq45WYu) - Wahidev Academy
 
 
+### Angular
+
+* [Tutorial AngularJS Indonesia](https://www.youtube.com/playlist?list=PLohWNsc-n1L-3ffIaGRAjbTQm7bh9F9FG) - Windu Purnomo
+
+
 ### Kotlin
 
 * [Belajar Kotlin Collection](https://www.youtube.com/playlist?list=PL-CtdCApEFH-aC-35fw5qrr6DZ-qMzmRr) - Programmer Zaman Now