docs: fix broken star history chart

[Dessalines39394]

The star history chart is currently broken and no longer renders. This fixes it by pointing the chart in the README and all localized versions to a working alternative that uses a different data source and requires no API token.

Summary by CodeRabbit

• Documentation
  • Updated Star History charts in the main and translated README files to use the new hosting URLs.
  • Ensured embedded charts continue loading consistently across all supported language versions.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: d203a814-d98b-4762-8824-6f45d8e4178a

📥 Commits

Reviewing files that changed from the base of the PR and between 88625a8 and 73ea902.

📒 Files selected for processing (7)

• README.md
• docs/README.fr.md
• docs/README.ja-JP.md
• docs/README.ko-KR.md
• docs/README.ru-RU.md
• docs/README.vi.md
• docs/README.zh-CN.md

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📝 Walkthrough

Walkthrough

The Star History embeds in the main and localized README files now use star-history.dera.page URLs. Existing chart metadata and dark/light theme variants remain unchanged.

Changes

Star History embed update

Layer / File(s)	Summary
Update Star History embed URLs README.md, docs/README.*.md	The Star History link and chart image sources now use star-history.dera.page. Chart parameters and theme variants remain intact.

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

Merge Risk: ⚪ Minimal · up to 73ea9

This updates the star history chart links in the README files to a working alternative without changing product code; no actionable merge-blocking risk remains after normal checks.

Suggested reviewers: neko-233, nekomeowww

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: fixing the broken Star History chart in the documentation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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