adding doc_type ranking so references and guides appear first

[dhtclk]

Summary

Compute search is returning changelog before the reference material. Changelog should not be first.

Fixed so that doc_type ranking is taken into account in the algolia index.

Checklist

• Delete items not relevant to your PR
• URL changes should add a redirect to the old URL via https://github.com/ClickHouse/clickhouse-docs/blob/main/docusaurus.config.js
• If adding a new integration page, also add an entry to the integrations list here: https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/integrations/index.mdx

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Project	Deployment	Preview	Comments	Updated (UTC)
clickhouse-docs	Ready	Preview	Comment	Oct 3, 2025 1:41am

3 Skipped Deployments

Project	Deployment	Preview	Comments	Updated (UTC)
clickhouse-docs-jp	Ignored			Oct 3, 2025 1:41am
clickhouse-docs-ru	Ignored			Oct 3, 2025 1:41am
clickhouse-docs-zh	Ignored			Oct 3, 2025 1:41am