[relative-beyond-top-level] Create the initial documentation

[Pierre-Sassoulas]

Type of Changes

	Type
✓	📜 Docs

Description

Refs #7897, no need to suffer too much, a comment in good.py is good enough imo. Might be blocked by #8991

[codecov]

Codecov Report

Merging #8993 (e6468e6) into main (2d3aadd) will not change coverage.
Report is 2 commits behind head on main.
The diff coverage is n/a.

❗ Current head e6468e6 differs from pull request most recent head 4594341. Consider uploading reports for the commit 4594341 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8993   +/-   ##
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  Coverage   95.76%   95.76%           
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  Files         173      173           
  Lines       18616    18616           
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  Hits        17827    17827           
  Misses        789      789           

[DanielNoord]

Committed some spelling changes. Thanks for the recent work on the docs!