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

README.ja-JP.md

@@ -358,6 +358,7 @@ 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" valign="top" width="14.28%"><a href="https://github.com/geodic"><img src="https://avatars.githubusercontent.com/u/64704703?v=4?s=100" width="100px;" alt="geodic"/><br /><sub><b>geodic</b></sub></a><br /><a href="https://github.com/Eugeny/tabby/commits?author=geodic" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/yyjdelete"><img src="https://avatars.githubusercontent.com/u/1819074?v=4?s=100" width="100px;" alt="SilverFox"/><br /><sub><b>SilverFox</b></sub></a><br /><a href="https://github.com/Eugeny/tabby/commits?author=yyjdelete" title="Code">💻</a></td>
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