[Bug] section 4 contains the file creation instructions twice

[SimonVerhoeven]

Describe the bug
Redundant file content in section 4

To Reproduce
Go to section 4 of the readme, it contains the same file content twice. Once as description, once as activity

Expected behavior
To see the two bits merged

[hectorsector]

Thanks for the suggestion, @SimonVerhoeven. I can see what you mean, it looks a little repetitive that there's a long form explanation followed by specific steps that take the user through doing the same thing that was explained. While repetitive, in this case it makes sense and it aligns with the format of the other steps and courses in Skills so we'll keep it.