Ordering TOC

Author: aorjoa

books/free-programming-books-th.md

@@ -1,10 +1,10 @@
 ### Index
 
+* [Apache Spark](#apache-spark)
 * [Go](#go)
 * [IoT (internet of things)](#iot-internet-of-things)
 * [Java](#java)
 * [Python](#python)
-* [Apache Spark](#apache-spark)
 
 
 ### Go