Add generics resource (#8758)

src/data/roadmaps/golang/content/go-advanced/generics.md

@@ -7,4 +7,4 @@ Visit the following resources to learn more:
 - [@official@Generics](https://go.dev/doc/tutorial/generics)
 - [@official@Go Blog: Generics](https://go.dev/blog/intro-generics)
 - [@article@Go by Example: Generics](https://gobyexample.com/generics)
-- [@video@Generics Explained](https://www.youtube.com/watch?v=SSRIn5DAmyw)
+- [@video@Generics Explained](https://www.youtube.com/watch?v=WpTKqnfp5dY)