cloud: update the link of the Clusters page for TiDB Cloud Starter and Essential

[qiancai]

What is changed, added or deleted? (Required)

This PR makes the following changes:

• Update the link of the Clusters page for TiDB Cloud Starter and Essential from [**Clusters**](https://tidbcloud.com/console/clusters) to [**TiDBs**](https://tidbcloud.com/tidbs).
• Update the link of a specific Serverless cluster from /clusters/<cluster_id>/xxxxx to /tidbs/<tidb_id>/xxxx

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

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For details, see tips for choosing the affected versions.

• 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)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)

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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

[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 a comprehensive update to the TiDB Cloud documentation, aligning it with recent UI changes in the console. The primary goal is to ensure that all references to the 'Clusters' page for TiDB Cloud Starter and Essential tiers are accurately updated to the new 'TiDBs' page, providing users with correct and consistent navigation instructions. This change enhances the user experience by eliminating outdated links and clarifying console pathways for different cluster types.

Highlights

• Documentation Update: Updated numerous documentation files to reflect a change in the TiDB Cloud console, renaming the 'Clusters' page to 'TiDBs' for Starter and Essential cluster tiers.
• Improved Navigation Clarity: Introduced conditional instructions in several documents to guide users to the correct console page ('TiDBs' for Starter/Essential and 'Clusters' for Dedicated) based on their cluster type.
• URL Consistency: Standardized console URLs across various guides, ensuring users are directed to the most current and relevant pages within the TiDB Cloud interface.

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[gemini-code-assist]

Code Review

Thank you for this contribution. The changes correctly update the link for the Clusters page to the new TiDBs page for Starter and Essential tiers. I appreciate the additional improvements in several files that now provide clearer instructions for different cluster tiers (Starter/Essential vs. Dedicated). This greatly improves the documentation's accuracy and usability.

I have one minor suggestion for consistency. Overall, great work!

[gemini-code-assist]

For consistency and accuracy, it's better to link to the root of the TiDB Cloud console when the link text is "TiDB Cloud console". The current link .../tidbs is specific to Serverless clusters, but API keys are managed at a higher level (e.g., organization settings).

A more general link to https://tidbcloud.com/ would be more accurate for all users and consistent with similar changes in this PR (e.g., in tidb-cloud/serverless-faqs.md). This also aligns with the style guide's emphasis on technical accuracy and consistency.¹²

Style Guide References

Suggested change

	Currently, TiDB Cloud Terraform Provider does not support managing API keys. So you need to create an API key in the [TiDB Cloud console](https://tidbcloud.com/tidbs).
	Currently, TiDB Cloud Terraform Provider does not support managing API keys. So you need to create an API key in the [TiDB Cloud console](https://tidbcloud.com/).

Footnotes

1. The style guide emphasizes the importance of technical accuracy and terminology consistency. (link) ↩

2. The style guide requires using consistent terminology. (link) ↩

[ti-chi-bot]

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