Update README.it.md

[kiank89]

reboot after installation of Toolchain Rust to resolve a "command not found" problem.

Summary

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• What changed:
• What did not change (scope boundary):

Label Snapshot (required)

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Change Metadata

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Linked Issue

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Supersede Attribution (required when Supersedes # is used)

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Validation Evidence (required)

Commands and result summary:

cargo fmt --all -- --check
cargo clippy --all-targets -- -D warnings
cargo test

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Security Impact (required)

• New permissions/capabilities? (Yes/No)
• New external network calls? (Yes/No)
• Secrets/tokens handling changed? (Yes/No)
• File system access scope changed? (Yes/No)
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Privacy and Data Hygiene (required)

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Compatibility / Migration

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• Migration needed? (Yes/No)
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i18n Follow-Through (required when docs or user-facing wording changes)

• i18n follow-through triggered? (Yes/No)
• If Yes, locale navigation parity updated in README*, docs/README*, and docs/SUMMARY.md for supported locales (en, zh-CN, ja, ru, fr, vi)? (Yes/No)
• If Yes, localized runtime-contract docs updated where equivalents exist (minimum for fr/vi: commands-reference, config-reference, troubleshooting)? (Yes/No/N.A.)
• If Yes, Vietnamese canonical docs under docs/i18n/vi/** synced and compatibility shims under docs/*.vi.md validated? (Yes/No/N.A.)
• If any No/N.A., link follow-up issue/PR and explain scope decision:

Human Verification (required)

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Side Effects / Blast Radius (required)

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Rollback Plan (required)

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Risks and Mitigations

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