Links do not work

[AinhoMD]

In this part of the formation (https://github.com/prefapp/formacion/blob/master/cursos/terraform/01_terraform/example.md) the two present links do not work.

[manuelver]

It looks like the images were never there. Maybe @pablosanchezpaz knows more.

[yvidalv]

Related to #159 : it's not that the images aren't there, it is the page which is not correct. Example.md is a page copied from another course. As I see it, @pablosanchezpaz probably wanted to create an Terraform example, but it was never uploaded to the course.

Should we delete this page or create a correct example page?