Fix priority assignment in sitemap generation

[john-gitbook]

Related to this ticket: https://linear.app/gitbook-x/issue/RND-8690/update-sitemap-to-fully-comply-with-xml-sitemap-protocol

Users are asking if we can update the sitemap to have 'priority' come after 'location'. In most cases this doesn't matter but for more strict crawlers the format needs to fully comply with xml sitemap protocol.

[linear]

RND-8690 Update Sitemap to fully comply with xml sitemap protocol

[changeset-bot]

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Latest commit: 0450624

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[github-actions]

Summary of the deployments:

Version	URL	Status
Vercel	https://gitbook-v2-5w8x9gouz-gitbook.vercel.app	✅
Cloudflare	https://d5bb0c51-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	2v	2c
GitBook	https://gitbook-v2-5w8x9gouz-gitbook.vercel.app/url/gitbook.com/docs	https://d5bb0c51-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.com/docs
E2E	https://gitbook-v2-5w8x9gouz-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open	https://d5bb0c51-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v2 (Inspect)	⚠️ Changes detected (Review)	5 changed	Dec 15, 2025, 3:00 PM
v2-cloudflare (Inspect)	⚠️ Changes detected (Review)	13 changed	Dec 15, 2025, 3:04 PM
v2-vercel (Inspect)	⚠️ Changes detected (Review)	21 changed	Dec 15, 2025, 3:03 PM