test: fix typos in test files

[watilde]

Minor tweaks

[nodejs-github-bot]

Review requested:

• @nodejs/web-standards

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.51%. Comparing base (955d347) to head (68d9917).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #61408      +/-   ##
==========================================
- Coverage   88.52%   88.51%   -0.02%     
==========================================
  Files         704      704              
  Lines      208802   208804       +2     
  Branches    40318    40312       -6     
==========================================
- Hits       184842   184816      -26     
- Misses      15947    15960      +13     
- Partials     8013     8028      +15     

see 23 files with indirect coverage changes

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