ローカル環境のhydration error修正

[AkifumiSato]

fix: #867

• {}だと現状hydration errorが発生するため、修正しました
• 過去のコミット見るに、翻訳サイト固有の問題だと思います
• {}を削除すると空白がはいってしまうため、{''}にしています

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
legacy-ja-reactjs-org	Ignored	Preview		Oct 8, 2025 6:33am

[github-actions]

Size changes

Details

📦 Next.js Bundle Analysis for react-dev

This analysis was generated by the Next.js Bundle Analysis action. 🤖

Five Pages Changed Size

The following pages changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/404	130.35 KB (🟡 +49 B)	240.82 KB
/500	130.36 KB (🟡 +49 B)	240.83 KB
/[[...markdownPath]]	132.68 KB (🟡 +49 B)	243.14 KB
/errors	130.6 KB (🟡 +49 B)	241.07 KB
/errors/[errorCode]	130.58 KB (🟡 +49 B)	241.04 KB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

Next to the size is how much the size has increased or decreased compared with the base branch of this PR. If this percentage has increased by 10% or more, there will be a red status indicator applied, indicating that special attention should be given to this.

[honey32]

• 現状で、yarn dev 時に Hydration Error が発生していたこと
• この変更で、それが解消されたこと

それぞれ確認できました！

[honey32]

cc: @smikitky

コンテンツではなく技術的な部分の修正であり、修正内容も明白なので、

僕1人の Approve をもって、2 approving reviews のルールをバイパスしてマージします