docs: clarify usage of len(merkleRowRoots)

[rootulp]

Closes #2392

Note: this doesn't introduce a new variable name (the proposed solution in the issue). Happy to do so if reviewers request.

[codecov-commenter]

Codecov Report

Merging #2431 (1d77fe7) into main (beaf6db) will decrease coverage by 0.27%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #2431      +/-   ##
==========================================
- Coverage   53.28%   53.01%   -0.27%     
==========================================
  Files         156      156              
  Lines        9915     9919       +4     
==========================================
- Hits         5283     5259      -24     
- Misses       4179     4205      +26     
- Partials      453      455       +2     

Impacted Files	Coverage Δ
share/eds/byzantine/bad_encoding.go	32.74% <0.00%> (-3.96%)	⬇️

... and 5 files with indirect coverage changes

[rootulp]

hmm is the Required Labels check failing here because the label is kind:doc and it wants kind:docs 🤔

[Wondertan]

This might be already covered by two overs PRs targeting BEFP

cc @vgonkivs

[vgonkivs]

Hey @rootulp, thanks for the PR. I've already changed the order in this PR, but the comment is really helpful.

[rootulp]

@vgonkivs should I keep this PR open or close it in favor of #2408?

[vgonkivs]

You can revert the condition but keep your comment. wdyt?

[rootulp]

You can revert the condition but keep your comment. wdyt?

Done in 36e7bb7

[rootulp]

@vgonkivs @Wondertan this PR is ready for review + merge.