Update free-course-id.md (#4726)

add elasticsearch course

free-courses-id.md

@@ -8,6 +8,7 @@
 * [Dart](#dart)
 * [Desain dan Arsitektur](#desain-dan-arsitektur)
 * [Docker](#docker)
+* [Elasticsearch](#elasticsearch)
 * [Flutter](#flutter)
 * [Git](#git)
 * [Go](#go)
@@ -84,6 +85,11 @@
 * [Tutorial Docker untuk Pemula](https://www.youtube.com/playlist?list=PL-CtdCApEFH-A7jBmdertzbeACuQWvQao) - Programmer Zaman Now
 
 
+### Elasticsearch
+
+* [Belajar Elasticsearch untuk Pemula](https://www.youtube.com/playlist?list=PL-CtdCApEFH_tVTwrxVt0K5LmtVT2u8fh) - Programmer Zaman Now
+
+
 ### Flutter
 
 * [Flutter Tutorial (Flutter Fundamentals)](https://www.youtube.com/playlist?list=PLZQbl9Jhl-VACm40h5t6QMDB92WlopQmV) - Erico Darmawan Handoyo