update README.ja-JP.md [skip ci]

README.ja-JP.md

@@ -300,6 +300,7 @@ Windows上では、`Tabby.exe`がある場所と同じ場所に`data`フォル
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       <td align="center"><a href="https://github.com/almzau"><img src="https://avatars.githubusercontent.com/u/29115846?v=4?s=100" width="100px;" alt="Allan"/><br /><sub><b>Allan</b></sub></a><br /><a href="#design-almzau" title="Design">🎨</a></td>
+      <td align="center"><a href="https://oidamo.de"><img src="https://avatars.githubusercontent.com/u/17959794?v=4?s=100" width="100px;" alt="Benjamin Brandmeier"/><br /><sub><b>Benjamin Brandmeier</b></sub></a><br /><a href="https://github.com/Eugeny/tabby/commits?author=BenjaminBrandmeier" title="Code">💻</a></td>
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