docs: add JSDoc to config module

[omsrisrieternalradhakrsna]

What

Adds JSDoc to the config module.

Why

Helps contributors understand configuration internals.

NO EM DASHES.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 5fb4584

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[codspeed-hq]

Merging this PR will not alter performance

✅ 18 untouched benchmarks

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_{Comparing omsrisrieternalradhakrsna:docs/add-jsdoc-config (5fb4584) with main (86e1190)¹}

Footnotes

1. No successful run was found on main (fa7a264) during the generation of this report, so 86e1190 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[ematipico]

Thank you, but I believe the name of the functions and their code are already good enough