Update c free course (EbookFoundation#6576)

* Update free-courses-pt_BR.md

* Update free-courses-pt_BR.md

* Update free-courses-pt_BR.md

* Update free-course-pt_BR.md node.js

* update free-courses-pt_BR.md

* update free-course-pt_BR.md node.Js

* Update free-course-pt_BR.md Curso de C

Author: lucas-yago

courses/free-courses-pt_BR.md

@@ -51,6 +51,7 @@
 ### C
 
 * [Aprenda C e C++ - Fundamentos Para Lógica de Programação](https://www.udemy.com/c-e-c-fundamentos-para-logica-de-programacao/) - One Day Code (Udemy)
+* [Curso de C](https://www.youtube.com/playlist?list=PLesCEcYj003SwVdufCQM5FIbrOd0GG1M4) - eXcript (Youtube)
 * [Programação Moderna em C](https://www.youtube.com/playlist?list=PLIfZMtpPYFP5qaS2RFQxcNVkmJLGQwyKE) - Papo Binário (Youtube)