i18n(ja): fix dropped particles, misplaced clauses, and broken parentheses in release notes

[yahonda]

What is changed, added or deleted? (Required)

Fixes several machine-translation defects found during a line-by-line review of release-4.0.0-beta.md, release-4.0.0-beta.1.md, and release-4.0-ga.md, plus 9 files flagged by a full-width-parenthesis balance check (release-2.0-rc.3.md, release-3.0.6.md, release-6.3.0.md, release-6.5.0.md, release-7.1.0.md, release-7.1.3.md, release-7.5.4.md, release-8.4.0.md, release-8.5.0.md):

• Dropped particles (を/が/の) before/after noun-modifying verbs
• Misplaced/orphaned clause fragments drifted away from the phrase they modify
• A mistranslation ("normal" read as geometric "surface normal" instead of "usual/regular")
• Word-order swaps not matching a correct duplicate of the same bullet elsewhere in the same file
• Unclosed or stray full-width parentheses, in one case fully reconstructing a garbled/scrambled sentence to match the English source

This is a subset of a broader review pass; overlapping fixes already covered by #23704 and #23706 were excluded here to avoid duplicating those PRs.

Which TiDB version(s) do your changes apply to? (Required)

• v8.5 (LTS)

Do your changes match one of the following descriptions? (Required)

• Delete docs
• Add docs for a new feature
• Improve docs quality on top of what already exists
• Docs for a TiDB Cloud feature (this feature is not in TiDB self-managed)
• Documentation for open source RFC

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Corrected punctuation, parentheses, grammar, and formatting across release notes for TiDB versions 2.0 through 8.5.
  • Improved Japanese wording and readability in descriptions of features, improvements, and bug fixes.
  • Corrected technical references, code formatting, terminology, and inline code presentation.
  • Reordered selected links and bullet points for clearer presentation.
  • Clarified release documentation without changing product functionality or the documented content of issues.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Team

Run ID: a729ae21-6e46-476a-be26-c3de01ad66a4

📥 Commits

Reviewing files that changed from the base of the PR and between 5571e3b and 79eb049.

📒 Files selected for processing (1)

• releases/release-4.0.0-beta.md

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📝 Walkthrough

Walkthrough

The release notes receive typographical, punctuation, Japanese wording, inline-formatting, and bullet-structure corrections. No product functionality or public declarations change.

Changes

Release notes editorial corrections

Layer / File(s)	Summary
Punctuation and inline formatting corrections releases/release-2.0-rc.3.md, releases/release-3.0.6.md, releases/release-6.3.0.md, releases/release-6.5.0.md, releases/release-7.1.0.md, releases/release-7.1.3.md, releases/release-8.4.0.md	Closing punctuation, parentheses, inline code delimiters, and contributor-link formatting are corrected.
Japanese wording and list corrections releases/release-4.0-ga.md, releases/release-4.0.0-beta.1.md, releases/release-4.0.0-beta.md, releases/release-7.5.4.md, releases/release-8.5.0.md	Japanese grammar, terminology, front matter, sentence structure, and bullet-list organization are corrected without changing feature content.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Merge Risk: ⚪ Minimal · up to 79eb0

This updates Japanese release-note wording and formatting only, without changing product behavior. The corrections are ready to merge.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description explains the changes and identifies the affected files, but it selects only v8.5 even though the changes affect release notes from TiDB 2.0 through 8.5. It also omits the required rela…	Specify all affected TiDB versions or explain the repository's version-selection rule for historical release notes. Add the related PR or file links section, including references to PRs #23704 and #23706, and complete the remaining applicab…

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main changes: Japanese translation corrections and broken-parenthesis fixes in release notes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Description check

Explanation

The description explains the changes and identifies the affected files, but it selects only v8.5 even though the changes affect release notes from TiDB 2.0 through 8.5. It also omits the required related PR or file links section and does not use the complete template checklist.

Resolution

Specify all affected TiDB versions or explain the repository's version-selection rule for historical release notes. Add the related PR or file links section, including references to PRs #23704 and #23706, and complete the remaining applicable template sections.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

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Actionable comments posted: 3

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Team

Run ID: 425ff1b3-ade6-4d79-92b9-54e67b5db972

📥 Commits

Reviewing files that changed from the base of the PR and between 23d5ab9 and 94bd24a.

📒 Files selected for processing (12)

• releases/release-2.0-rc.3.md
• releases/release-3.0.6.md
• releases/release-4.0-ga.md
• releases/release-4.0.0-beta.1.md
• releases/release-4.0.0-beta.md
• releases/release-6.3.0.md
• releases/release-6.5.0.md
• releases/release-7.1.0.md
• releases/release-7.1.3.md
• releases/release-7.5.4.md
• releases/release-8.4.0.md
• releases/release-8.5.0.md

Included review availability: Your plan provides up to 4 included reviews per hour; 1 remains after this review.