[coderaviverma]

Summary

• add JSONViewerTool's JSON Validator as a third browser-based option in the FAQ's introductory JSON section
• preserve the two existing recommendations and the surrounding guidance

Verification

• confirmed the current FAQ is public at https://www.repronim.org/reproschema/FAQ/
• confirmed the proposed destination returns HTTP 200
• git diff --check passes
• the local MkDocs build was not run because MkDocs is not installed in the available environment

Affiliation

I am affiliated with JSONViewerTool. This is a narrowly scoped resource suggestion; maintainers retain full editorial discretion.