cloud: update doc preview links on the premium index page

[qiancai]

What is changed, added or deleted? (Required)

Revised outdated doc links on the Premium index page.

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[gemini-code-assist]

Summary of Changes

Hello @qiancai, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on enhancing the user experience for TiDB Cloud Premium documentation. It standardizes terminology by replacing 'Cluster' with 'TiDB Instance' and ensures all relevant links within the premium documentation index correctly direct users to premium-specific resources for various operations, from instance creation to access management, thereby improving clarity and accuracy.

Highlights

• Terminology Consistency: Updated 'Cluster' references to 'TiDB Instance' across the documentation, including the Table of Contents and premium index pages, for improved clarity and consistency.
• Documentation Link Updates: Revised numerous documentation links within the tidb-cloud/premium/_index.md file to ensure they point to the correct premium-specific resources, covering topics like instance creation, connection, data management, and monitoring.
• Access Management Documentation Refinement: Streamlined access management documentation by updating links for user roles, profiles, and organization access, and replacing 'Manage Project Access' and 'Configure Firewall Rules for Public Endpoints' with a new link for 'Configure an IP Access List' in the premium index.

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[gemini-code-assist]

Code Review

This pull request updates documentation links and labels in TOC-tidb-cloud-premium.md and tidb-cloud/premium/_index.md to ensure consistency and accuracy for the TiDB Cloud Premium plan. The changes correctly replace the term 'Cluster' with 'TiDB Instance' and update URLs to point to premium-specific resources, which aligns with the goal of improving documentation clarity. The modifications are well-executed and adhere to the repository's style guide regarding terminology consistency. Overall, this is a solid improvement to the documentation.

[lilin90]

/lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-10-31 10:19:31.770388209 +0000 UTC m=+3222.612969884: ☑️ agreed by lilin90.

[qiancai]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiancai

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