refactor: create platforms directory for cloud vendor guides

[Junie06]

What type of PR is this?

/kind cleanup
/kind documentation

What this PR does / why we need it:
Restructures installation documentation by placing cloud vendor/platform guides into a dedicated directory

Which issue(s) this PR fixes:

• Created docs/installation/platforms directory for vendor guides
• Moved AWS guide from docs/installation/aws-installation.md‎ to docs/installation/platforms/aws.md
• Updated relative link for adjusting configuration in aws.md to match new directory depth
• Updated sidebars.js to introduce a Cloud Platforms section under Installation
• Updated Chinese translation directory structure to match

Fixes #795

Checklist:

• npm run lint and npm run format:check pass
• npm run build succeeds for both en and zh
• Chinese translation updated if English docs changed
• Commits are signed off (git commit -s)

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📥 Commits

Reviewing files that changed from the base of the PR and between b5a333c and 6243b01.

📒 Files selected for processing (3)

• docs/installation/platforms/aws.md
• i18n/zh/docusaurus-plugin-content-docs/current/installation/platforms/aws.md
• sidebars.js

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📝 Walkthrough

Walkthrough

The AWS installation guide is now grouped under a new Cloud Platforms sidebar category. Its English and Chinese configuration links use the corrected relative path.

Changes

Installation documentation

Layer / File(s)	Summary
Cloud Platforms navigation sidebars.js	The Installation sidebar now contains a Cloud Platforms category with the AWS guide.
AWS guide link correction docs/installation/platforms/aws.md, i18n/zh/docusaurus-plugin-content-docs/current/installation/platforms/aws.md	The English and Chinese guides now link to the configuration guide through the corrected relative path.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: 🔵 Low · up to 6243b

The AWS guide’s move changes its public URL, so existing links and bookmarks may stop working unless a redirect is added. The PR is otherwise mergeable with explicit owner follow-up on this bounded documentation-routing risk.

Possibly related PRs

• Project-HAMi/website#562: Corrects AWS installation documentation links.
• Project-HAMi/website#765: Reorganizes Installation navigation in sidebars.js.

Suggested reviewers: archlitchi, windsonsea

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The changes support the documentation structure requirement in [#795] but do not add the requested platform-specific installation guidance for the listed platforms.	Add the required GKE, AKS, CCE, TKE, IBM Cloud, and OpenShift guides with prerequisites, platform configuration, verification, troubleshooting, sidebar entries, and Chinese mirrors.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Out of Scope Changes check	✅ Passed	The directory move, corrected links, sidebar category, and Chinese mirror changes are related to the documentation restructuring described in [#795].
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main documentation restructure by creating a platforms directory for cloud vendor guides.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[mesutoezdil]

clean move: relative links fixed at both depths, no other page links the old path, and the frozen v2.9.0 snapshot correctly keeps its copy. one gap inline. note the url changes from /installation/aws-installation to /installation/platforms/aws on next docs, low risk but worth a line in the pr body.

[mesutoezdil]

new category label needs a zh entry in i18n/zh/.../current.json, sidebar.docs.category.Cloud Platforms, otherwise the zh sidebar shows english.