fix: update correct JSON Schema identifiers

[jeremyfiel]

update docs to correctly identify JSON Schema 2020-12 is the only default

fixes #4412

Summary by CodeRabbit

• Documentation
  • Clarified which JSON Schema draft version is the default in the documentation.
• Bug Fixes
  • Corrected the JSON Schema $schema URI formats for both "draft-2020-12" and "draft-7" outputs.
• Tests
  • Updated test snapshots to reflect the corrected $schema URIs.

[coderabbitai]

Walkthrough

The updates correct the JSON Schema $schema URI for both draft-2020-12 and draft-7 targets in code and test snapshots, and clarify the documentation to indicate the proper default. Only string values and comments are adjusted, with no changes to logic or exported APIs.

Changes

File(s)	Change Summary
packages/docs/content/json-schema.mdx	Updated documentation to clarify only "draft-2020-12" is the default target; "draft-7" is no longer marked as default.
packages/zod/src/v4/classic/tests/json-schema.test.ts	Updated all test snapshots to use corrected $schema URLs for draft-2020-12 and draft-7.
packages/zod/src/v4/core/to-json-schema.ts	Fixed $schema URI assignment for both draft-2020-12 (slash instead of hyphen) and draft-7 (HTTP and trailing #).

Assessment against linked issues

Objective	Addressed	Explanation
Correct the default $schema identifier for JSON Schema draft-07 (#4412)	✅

Possibly related PRs

• v4: Clarify defaults for toJsonSchema options #4223: Also clarifies the default designation for the "draft-7" option in JSON Schema generation, directly related to documentation correction.

Poem

A slash for the draft, a hash for the seven,
Schema URLs now point straight to JSON heaven.
Docs are precise, and tests all align,
With each little fix, the schemas refine.
Code and comments, in harmony dwell—
All’s well in the land where the schemas compel!
🚀

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: ASSERTIVE
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between a2c9892 and abce737.

📒 Files selected for processing (3)

• packages/docs/content/json-schema.mdx (1 hunks)
• packages/zod/src/v4/classic/tests/json-schema.test.ts (61 hunks)
• packages/zod/src/v4/core/to-json-schema.ts (1 hunks)

🔇 Additional comments (4)

packages/zod/src/v4/core/to-json-schema.ts (2)

722-722: Corrected Draft-2020-12 $schema URI
The $schema URI now follows the official spec’s https://json-schema.org/draft/2020-12/schema. Nice catch!

---

724-724: Verify Draft-7 $schema URI scheme
This change uses http://json-schema.org/draft-07/schema#. The official docs often reference https://json-schema.org/draft-07/schema#. Could you confirm that the http scheme and trailing # are intentional?

packages/zod/src/v4/classic/tests/json-schema.test.ts (1)

9-246: Snapshots updated to new $schema URI
All inline snapshots have been refreshed to the corrected https://json-schema.org/draft/2020-12/schema. The rest of the schema output remains unchanged and tests are valid.

packages/docs/content/json-schema.mdx (1)

145-145: Clarified default target version
The documentation now clearly marks Draft 2020-12 as the default and lists Draft-7 as an alternative. This aligns nicely with the implementation.

✨ Finishing Touches

• 📝 Generate Docstrings

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[EDM115]

Thanks Jeremy 🎉