Update free-courses-pt_BR.md (#3181)

free-courses-pt_BR.md

@@ -18,3 +18,4 @@
 ### Ruby
 
 * [Curso de Ruby on Rails para Iniciantes](https://www.youtube.com/playlist?list=PLe3LRfCs4go-mkvHRMSXEOG-HDbzesyaP) - Jackson Pires (YouTube)
+* [Ruby Para Iniciantes](https://www.udemy.com/ruby-para-iniciantes/) - Bruno Paulino (Udemy)