Update free-courses-pt_BR.md (#3745)

free-courses-pt_BR.md

@@ -18,6 +18,7 @@
 * [JavaScript](#javascript)
 * [Jekyll](#jekyll)
 * [Kotlin](#kotlin)
+* [Kubernetes](#kubernetes)
 * [Linux](#linux)
 * [Markdown](#markdown)
 * [Node.js](#nodejs)
@@ -140,6 +141,11 @@
 * [Desenvolvedor Kotlin Iniciante](https://www.udemy.com/desenvolvedor-kotlin-iniciante/) - Gabriel Ferrari, Adriano Sacardo (Udemy)
 
 
+### Kubernetes
+
+* [Maratona Kubernetes](https://www.youtube.com/playlist?list=PLB1hpnUGshULerdlzMknMLrHI810xIBJv&origin=CursosErickWendel) - Microsoft Brasil(Youtube)
+
+
 ### Linux
 
 * [Introdução ao Sistema Operacional Linux](https://www.udemy.com/course/linux-ubuntu/) - Diego Mariano (Udemy)