typo: Data modeling techniques

[sismail-meter]

Summary

Fix a typo on the 'Data modeling techniques' page, 'non-existence' to 'non-existent'.

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/vercel.json
• 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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Note

Low Risk
Documentation-only wording fix with no runtime or behavioral impact.

Overview
Corrects wording in the Query optimization bullet under partitions on the PostgreSQL migration guide’s data modeling page: replaces non-existence with non-existent when describing how little benefit you get from targeting a single partition if the partitioning key is already early in the primary key.

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[sismail-meter]

Thanks @Blargian! Looks like there'll need to be some extra hoops to jump through to get the Vercel workflows running here, to get it merged in.

[Blargian]

Thanks @Blargian! Looks like there'll need to be some extra hoops to jump through to get the Vercel workflows running here, to get it merged in.

All good. Thanks for fixing @sismail-meter, appreciated!

[mintlify]

Docs PR opened: ClickHouse/mintlify-docs-dev#119

Fixed a typo in the Postgres migration guide's data modeling page, changing "non-existence" to "non-existent."