doc: Clean up title case use

Peter Eisentraut <peter@eisentraut.org>

Commit: d0ed9ad8b07d716b1b8caae3d1eb370571a0a6f3
Author: Peter Eisentraut <peter@eisentraut.org>
Date: 2026-05-05T09:24:16Z
doc: Clean up title case use

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