Correct incorrect commentary and docs

[ctz]

fixes #69
fixes #68

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.89%. Comparing base (94c8ecf) to head (42d6bc5).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #70      +/-   ##
==========================================
- Coverage   98.89%   98.89%   -0.01%     
==========================================
  Files         161      161              
  Lines       37862    37855       -7     
==========================================
- Hits        37443    37436       -7     
  Misses        419      419              

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[codspeed-hq]

CodSpeed Performance Report

Merging #70 will not alter performance

_{Comparing jbp-not-wnaf (42d6bc5) with main (94c8ecf)}

Summary

✅ 134 untouched benchmarks