MAINT: Increase readability in CCITTFaxDecode

[j-t-1]

params.group is not always equal to 4, so the comment is changed.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.95%. Comparing base (01c98a5) to head (7dda4cb).
⚠️ Report is 53 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3416      +/-   ##
==========================================
- Coverage   96.96%   96.95%   -0.01%     
==========================================
  Files          55       55              
  Lines        9343     9340       -3     
  Branches     1708     1708              
==========================================
- Hits         9059     9056       -3     
  Misses        169      169              
  Partials      115      115              

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[stefan6419846]

Arbitrarily grouping list values in lines is usually a bad idea, especially since if we ever decide to apply an auto-formatter, this would lead to issues.

If it is unclear that these are grouped, we might consider moving the comments from behind the first value to a dedicated line before the first value of the group.

[j-t-1]

I disagree. But will revert them in single lines to get the small changes done.