[ja] Translate content/en/docs/reference/using-api/deprecation-policy…

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Co-authored-by: Taisuke Okamoto <34154552+b1gb4by@users.noreply.github.com>

* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* 翻訳前の英文削除

* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* suggestion取り込み

* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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* Update content/ja/docs/reference/using-api/deprecation-policy.md

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Co-authored-by: Taisuke Okamoto <34154552+b1gb4by@users.noreply.github.com>
Co-authored-by: Junya Okabe <86868255+Okabe-Junya@users.noreply.github.com>