Update free-programming-books-id.md (#7334)

* Update free-programming-books-id.md

Add E-book Cepat Mahir Python

* complete resource metadata

* lint: alphabetize

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

books/free-programming-books-id.md

@@ -158,6 +158,7 @@
 ### Python
 
 * [Belajar Python](http://www.belajarpython.com)
+* [Cepat Mahir Python](https://gilacoding.com/upload/file/Python.pdf) - Hendri, `edt.:` Romi Satria Wahono (PDF)
 * [Dasar Pemrograman Python](https://www.pythonindo.com/tutorial-python-dasar/)
 * [Dasar Pengenalan Pemrograman Python](https://play.google.com/store/books/details/Rolly_Maulana_Awangga_Dasar_dasar_Python?id=YpzDDwAAQBAJ) - Rolly Maulana AwanggaRayhan *(Membutuhkan akun Google Play Books atau email yang valid)*
 * [Database PostgreSQL, Pemrograman Python, dan SMS Gateway](http://rab.co.id/files/python/bukupython2.pdf.gz) (PDF)