docs(release-notes): fix misplaced 1.34.0 entries under Unreleased EN/ZH changelogs

[liruifengv]

Fix misplaced 1.34.0 entries under Unreleased EN/ZH changelogs

Related Issue

Resolve #(issue_number)

Description

Checklist

• I have read the CONTRIBUTING document.
• I have linked the related issue, if any.
• I have added tests that prove my fix is effective or that my feature works.
• I have run make gen-changelog to update the changelog.
• I have run make gen-docs to update the user documentation.

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 1 additional finding.

[Copilot]

Pull request overview

Fixes the release-notes changelog formatting so that the 1.34.0 entries are correctly grouped under a ## 1.34.0 (2026-04-14) section instead of living under Unreleased, for both English and Chinese documentation.

Changes:

• Add a 1.34.0 (2026-04-14) heading to the English changelog so the existing bullets are no longer under Unreleased.
• Add the corresponding 1.34.0 (2026-04-14) heading to the Chinese changelog.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
docs/en/release-notes/changelog.md	Inserts the 1.34.0 section header so release entries are correctly categorized outside Unreleased.
docs/zh/release-notes/changelog.md	Mirrors the 1.34.0 section header placement in the Chinese translation.

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[Copilot]

Per the docs authoring guide, the Chinese changelog should be translated from the English changelog (which is synced from the root CHANGELOG.md). If this section was misplaced due to sync issues, consider regenerating the English changelog from CHANGELOG.md first and then updating the Chinese translation accordingly, so future syncs don’t reintroduce the mismatch.

[Copilot]

docs/en/release-notes/changelog.md is auto-generated from the root CHANGELOG.md via docs/scripts/sync-changelog.mjs (see docs/AGENTS.md). To avoid the change being overwritten on the next docs build, please apply this fix in CHANGELOG.md and regenerate this file by running npm run sync (or the documented make gen-changelog flow), then commit the regenerated output.