Translate docs/upgrading-node-js

[kaisugi]

レビューお願いいたします 🙇

[uetchy]

🎉

[kaisugi]

修正しました 👍

[uetchy]

🎉

[Naturalclar]

非常に良い翻訳と思いました！
関係ないけど、このページ、Mac 以外のユーザに優しくなさそう‥
原文に Windows と Linux の場合の対応を追加する PR とか出してもいいかも

[gatsbot]

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