fix json schema doc link

[OhioDschungel6]

Change Summary

Two links in the doc did not work.

Checklist

• The pull request title is a good summary of the changes - it will be used in the changelog
• Unit tests for the changes exist
• Tests pass on CI
• Documentation reflects the changes where applicable
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

Selected Reviewer: @Kludex

[codspeed-hq]

CodSpeed Performance Report

Merging #9405 will not alter performance

_{Comparing OhioDschungel6:fix_json_schema_doc (f49f940) with main (4d7bef6)}

Summary

✅ 13 untouched benchmarks

[OhioDschungel6]

While browsing the documentation i found a dead link and fixed it.
please review. Thanks in advance.

[hramezani]

Thanks @OhioDschungel6