[docs] removes link in config reference

[sarah11918]

Changes

Removes an incorrect and unnecessary link in our config reference docs.

This is not urgent as live docs have been manually overwritten to be correct. This is needed as a correction at source.

Testing

no tests; change to docs text

Docs

only docs!

[changeset-bot]

⚠️ No Changeset found

Latest commit: 9bd649e

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[codspeed-hq]

CodSpeed Performance Report

Merging #12630 will degrade performances by 21.47%

_{Comparing sarah11918-patch-1 (9bd649e) with main (b073014)}

Summary

❌ 1 regressions
✅ 5 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	sarah11918-patch-1	Change
❌	Rendering: streaming [false], .mdx file	868.9 ms	1,106.4 ms	-21.47%