docs: suppress video previews site-wide so tutorial pages stop being flagged as non-watch pages

[balpreetgrowthnatives]

Summary

Google Search Console flags 62 docs.comfy.org tutorial URLs with "Video isn't on a watch page." Tutorial pages embed <video> elements to illustrate what a workflow produces. Googlebot discovers those embeds and tries to add each clip to its video index, but a documentation article is not a "watch page" (its primary purpose is not watching one specific video), so GSC rejects them.

This PR applies ("tell Google not to index docs videos as standalone video content; users still see and play them"):

"seo": {
  "metatags": {
    "googlebot": "max-video-preview:0"
  }
}

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• docs.json

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📝 Walkthrough

Walkthrough

Changes

SEO metadata

Layer / File(s)	Summary
Configure Googlebot metadata docs.json	Adds seo.metatags with googlebot set to max-video-preview:0.

Suggested reviewers: comfyui-wiki, lin-bot23

Merge Risk: ⚪ Minimal · up to 1ed2b

This change limits Google video previews for tutorial embeds while preserving video playback for users. No current merge-blocking risk is established.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
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.

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