GitHub and version control free course ptBR (#8930)

* add free course of  git

* correcao de ordem alfabetica

* Update courses/free-courses-pt_BR.md

Co-authored-by: Sharan J <50091666+shrn01@users.noreply.github.com>

Co-authored-by: Eric Hellman <eric@hellman.net>
Co-authored-by: Sharan J <50091666+shrn01@users.noreply.github.com>

courses/free-courses-pt_BR.md

@@ -126,6 +126,7 @@
 
 ### Git
 
+* [Curso de Git](https://www.youtube.com/playlist?list=PLucm8g_ezqNq0dOgug6paAkH0AQSJPlIe) - Bóson Treinamentos
 * [Curso de Git e GitHub: grátis, prático e sem usar comandos no terminal](https://www.youtube.com/playlist?list=PLHz_AreHm4dm7ZULPAmadvNhH6vk9oNZA) - Gustavo Guanabara (YouTube)
 * [Git e contribuições para projetos Open Source](https://www.udemy.com/course/git-e-github/) - Bruno Orlandi (Udemy)
 * [Git e Github para iniciantes](https://www.udemy.com/git-e-github-para-iniciantes/) - Willian Justen de Vasconcellos (Udemy)