Add Go lang courses to free-courses-en.md

- Add "Go Developer": This comprehensive course covers essential Go programming concepts, enabling learners to develop practical skills needed for real-world applications.

- Add "Introduction to Go": A beginner-friendly course that provides a solid foundation in Go programming, covering the basics of syntax, data types, and control structures.

courses/free-courses-en.md

@@ -796,6 +796,7 @@
 
 * [A Tour Of Go](https://tour.golang.org/welcome/1)
 * [DevOps BootCamp](https://github.com/jeffotoni/goworkshopdevops) - Jefferson Otoni Lima, et al.
+* [Go Developer](https://hyperskill.org/courses/25-go-developer) - Hyperskill *(registration required)*
 * [Go / Golang Crash Course](https://www.youtube.com/watch?v=SqrbIlUwR0U) - Traversy Media
 * [Go Programming Language Tutorial](https://www.youtube.com/playlist?list=PLS1QulWo1RIaRoN4vQQCYHWDuubEU8Vij) - ProgrammingKnowledge
 * [Golang](https://www.geeksforgeeks.org/golang/) - GeeksforGeeks
@@ -804,6 +805,7 @@
 * [Golang in under an hour](https://www.youtube.com/watch?v=N0fIANJkwic) - Eli Goldberg
 * [Golang Tutorial for Beginners \| Full Go Course](https://www.youtube.com/watch?v=yyUHQIec83I) - Nana Janashia (TechWorld with Nana)
 * [Gophercises: Free Coding Exercises for Budding Gophers](https://gophercises.com) - Jon Calhoun (email address *required*)
+* [Introduction to Go](https://hyperskill.org/courses/81-introduction-to-go) - Hyperskill *(registration required)*
 * [Learn Go \| Learn Go Programming](https://golangr.com) - golangr.com
 * [Learn Go Programming - Golang Tutorial for Beginners](https://www.youtube.com/watch?v=YS4e4q9oBaU) - Michael Van Sickle (freeCodeCamp)
 * [Learn Go Programming by Building 11 Projects – Full Course](https://www.youtube.com/watch?v=jFfo23yIWac) - Akhil Sharma  (FreeCodeCamp)