docs: add Hindi README links

[danielkaio]

Closes #9148

Description

Adds the Hindi README link to the main README and all translated README files.

Problem

The Hindi README was not linked from the main README or from the other translated README files.

Fix

Added the Hindi README link (readme_hi.md) to all README translations, excluding the Hindi README itself.

Screenshots

Not applicable — this is a documentation-only change.

Contribution Checklist:

• I've used AI significantly to create this pull request
• The pull request only addresses one issue or adds one feature.
• The pull request does not introduce any breaking changes
• I have added screenshots or gifs to help explain the change if applicable.
• I have read the contribution guidelines.
• Create an issue and link to the pull request.
• I've run the claude code review skill locally.

Summary by CodeRabbit

• Documentation
  • Added Hindi translation links to the README language selector across the main and translated documentation pages.
  • Improved discoverability of the Hindi README from all supported language versions.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Team

Run ID: 9af3fd83-2859-4b11-8c97-34bd790cfc5b

📥 Commits

Reviewing files that changed from the base of the PR and between f3c6b4f and 39efb19.

📒 Files selected for processing (20)

• docs/readme/readme_ar.md
• docs/readme/readme_bn.md
• docs/readme/readme_cn.md
• docs/readme/readme_de.md
• docs/readme/readme_es.md
• docs/readme/readme_fa.md
• docs/readme/readme_fr.md
• docs/readme/readme_it.md
• docs/readme/readme_ja.md
• docs/readme/readme_ka.md
• docs/readme/readme_kr.md
• docs/readme/readme_nl.md
• docs/readme/readme_pl.md
• docs/readme/readme_pt_br.md
• docs/readme/readme_ro.md
• docs/readme/readme_ru.md
• docs/readme/readme_tr.md
• docs/readme/readme_ua.md
• docs/readme/readme_zhtw.md
• readme.md

Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review.

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Walkthrough

The main README and 19 translated READMEs now include links to the Hindi README in their language selectors.

Changes

README navigation

Layer / File(s)	Summary
Add Hindi language links readme.md, docs/readme/readme_*.md	The main and translated README language selectors now link to readme_hi.md.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 39efb

This change adds navigation links to the existing Hindi README across the main and translated README pages. No current merge-blocking risk remains.

Poem

Hindi joins the language row
Twenty links now point the way
README paths align
Selectors gain a Devanagari sign
Documentation welcomes one more voice

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR adds documentation links but does not address issue #2012, which requires preserving the original casing of HTTP response header names.	Implement and test the response-header casing fix required by issue #2012, or link the PR to an issue that covers the Hindi README links.
Out of Scope Changes check	⚠️ Warning	The README link changes are unrelated to the linked issue #2012, which concerns HTTP response-header casing.	Remove the unrelated documentation changes, or update the linked issues to include the requirement for Hindi README links.

✅ Passed checks (3 passed)

Check name	Status	Explanation
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…
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the documentation changes: adding Hindi README links across the README files.

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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