Update free-courses-en.md (#10662)

courses/free-courses-en.md

@@ -668,6 +668,7 @@
 
 * [Fortran Programming Tutorials (Revised)](https://youtube.com/playlist?list=PLNmACol6lYY5_S8I4K29V2oI95nOCzQU8) - Fluidic Colours
 * [Fortran Tutorial](https://www.youtube.com/watch?v=__2UgFNYgf8) - Derek Banas
+* [Fortran Video Tutorials](https://www.youtube.com/playlist?list=PLvkU6i2iQ2fprrVmmkNP_V36mh0BMnS5L) - Cyprien Rusu
 
 
 ### Game Development