docs: a few fixes in the comments for Nutriscore

[jforget]

A few fixes in the comments.

Some remarks. I do not know what is the use of the
[nutrient]_points_max property, so the comment contains question
marks.

In the 2023 version, I have added a comment for nutrient salt but I
have not removed sodium. The provisional comment for salt contains
only question marks, please write something interesting.

There is a problem with the signatures of functions
get_value_with_one_less_negative_point_2023 and
get_value_with_one_more_positive_point_2023, but it is given in a
separate issue.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.64%. Comparing base (3e0999a) to head (5c6839e).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #12171   +/-   ##
=======================================
  Coverage   50.64%   50.64%           
=======================================
  Files          90       90           
  Lines       24145    24145           
  Branches     5804     5804           
=======================================
  Hits        12229    12229           
  Misses      10403    10403           
  Partials     1513     1513           

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[stephanegigandet]

Thank you!

[stephanegigandet]

/lint

[stephanegigandet]

Thanks for the PR. Could you run "make lint"? The /lint command only works for branches on the OFF repo, not forked repos.

[teolemon]

/lint

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud