chore: update developer guide links in _index.md (#23372)

[ti-chi-bot]

This is an automated cherry-pick of #23372

What is changed, added or deleted? (Required)

Update developer guide links in _index.md to the latest links

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

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions (in Chinese).

• master (the latest development version)
• v9.0 (TiDB 9.0 versions)
• v8.5 (TiDB 8.5 versions)
• v8.1 (TiDB 8.1 versions)
• v7.5 (TiDB 7.5 versions)
• v7.1 (TiDB 7.1 versions)
• v6.5 (TiDB 6.5 versions)

What is the related PR or file link(s)?

• This PR is translated from: chore: update developer guide links in _index.md docs-cn#21852
• Other reference link(s):

AI agent involvement

• The changes in this PR were primarily made by an AI agent on behalf of the PR author.

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

Summary by CodeRabbit

• Documentation
  • Updated developer guide links in the “Develop” learning path to the new /developer/ documentation URLs.
  • Updated the “Reference” section “Release Notes” link to the releases/tidb-self-managed destination.
  • Added a new “Connect to TiDB” resource.
  • Removed the outdated “Example Application” link.

[ti-chi-bot]

@qiancai This PR has conflicts, I have hold it.
Please resolve them or ask others to resolve them, then comment /unhold to remove the hold label.

[ti-chi-bot]

@ti-chi-bot: ## If you want to know how to resolve it, please read the guide in TiDB Dev Guide.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[coderabbitai]

Note

Reviews paused

It looks like this branch is under active development. To avoid overwhelming you with review comments due to an influx of new commits, CodeRabbit has automatically paused this review. You can configure this behavior by changing the reviews.auto_review.auto_pause_after_reviewed_commits setting.

Use the following commands to manage reviews:

• @coderabbitai resume to resume automatic reviews.
• @coderabbitai review to trigger a single review.

Use the checkboxes below for quick actions:

• ▶️ Resume reviews
• 🔍 Trigger review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 479107cc-38b1-47b7-b810-de6cfbad7b49

📥 Commits

Reviewing files that changed from the base of the PR and between 675ff9b and bbf6a61.

📒 Files selected for processing (1)

• _index.md

---

📝 Walkthrough

Walkthrough

The “Develop” learning path now uses updated /developer/ URLs, removes “Example Application,” and adds “Connect to TiDB.” The “Reference” section now links “Release Notes” to the TiDB self-managed releases page.

Changes

Documentation navigation links

Layer / File(s)	Summary
Update Develop documentation links _index.md	Replaces legacy Developer Guide Overview and Quick Start URLs, removes Example Application, and adds Connect to TiDB.
Update Reference documentation links _index.md	Changes the Release Notes link to the TiDB self-managed releases URL.

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

Possibly related PRs

• pingcap/docs#23372: Updates the same “Develop” learning path links.

Suggested labels: translation/from-docs-cn

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: updating developer guide links in _index.md.
Description check	✅ Passed	The description covers the required sections and reference links, but the affected TiDB version checkbox is left unselected.
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

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[coderabbitai]

Actionable comments posted: 1

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 0c47b52b-13b1-4a36-ad5c-1c9463d5be90

📥 Commits

Reviewing files that changed from the base of the PR and between 566e693 and 00482e2.

📒 Files selected for processing (1)

• _index.md

[qiancai]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiancai

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [qiancai]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch master: #23382.
But this PR has conflicts, please resolve them!