Abel B's feedback to Guide

[abogdanoski]

Seems to switch focus back and forth between papers and display items. Be clearer about unit of analysis at each stage

• [x] Clarify that assessment is about computational reproducibility of display items; not claims or robustness checks
• [x] Maybe replace letters with numbers or levels?
• [x] Clarify that reproducibility scores are only used in Assessment and Improvements stages. We don't ask reproducers to assign scores to robustness checks.
• [x] Fix numbering inconsistencies between stages and chapter numbers
• [ ] Add more tips with recommendations on best course of action for reproducer

[fhoces]

@abogdanoski I don't remember what the last point was about. Could you add a little more detail?