[stzn/the-swift-programming-language-jp] Pull request closed: #313 [CONTRIBUTION] 翻訳の説明を追加

[stzn/the-swift-programming-language-jp] Issue closed: #312 CONTRIBUTION.mdにバックティックをつける場合の記載を追加する

[stzn/the-swift-programming-language-jp] Pull request opened: #316 contributors readme action update

[stzn/the-swift-programming-language-jp] Pull request closed: #316 contributors readme action update