🌐 Sync PR #616 translations: Update the weaviate v4 migration docs and script (#617)

* 🌐 Initial translations for PR #616

Auto-generated translations for documentation changes in PR #616.

Last-Processed-Commit: dca5a24
Original-PR: #616
Languages: Chinese (zh), Japanese (ja)

🤖 Generated with GitHub Actions

* Update weaviate-v4-migration.mdx

* Update migration instructions in weaviate-v4 document

Clarified instructions for running schema migration.

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Riskey <36894937+RiskeyL@users.noreply.github.com>

Author: github-actions[bot]