tools: fix small inconsistencies in JSON doc output

[aduh95]

Taken out of #57343, it simplifies things and should be very safe.

[ovflowd]

SGTM

[github-actions]

Fast-track has been requested by @ovflowd. Please 👍 to approve.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/71280/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/71282/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.75%. Comparing base (8ba4d72) to head (1384e08).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #61757      +/-   ##
==========================================
- Coverage   89.76%   89.75%   -0.02%     
==========================================
  Files         675      675              
  Lines      204642   204642              
  Branches    39322    39318       -4     
==========================================
- Hits       183696   183669      -27     
- Misses      13250    13258       +8     
- Partials     7696     7715      +19     

see 27 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[nodejs-github-bot]

Landed in f003f46