Documentation on closing the issue

[dullhunk]

no mention of closure at https://software-eng.netlify.app/dealing.html#stepnine team 11 see https://ci.cs.manchester.ac.uk/jenkins/job/COMP23311%202022%20S1Team11/job/RoboTA%20Exercise%201%20Marks%20and%20Feedback/Team_20Marks_20and_20Feedback/ under release quality