The purpose of the go_router for Flutter is to use declarative routes to reduce complexity, regardless of the platform you're targeting (mobile, web, desktop), handling deep linking from Android, iOS and the web while still allowing an easy-to-use developer experience.
:sparkles: What kind of change does this PR introduce? (Bug fix, feature, docs update...)
This PR updates Japanese documents aligning with 2.5.7.
:thinking: Checklist before submitting
master
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