added contributors

Author: Kyome22

README.md

@@ -31,6 +31,7 @@ Access to the "Releases" page and download the RunCat.exe.
 - [juner](https://github.com/juner)
 - [t13801206](https://github.com/t13801206)
 - [MxShun](https://github.com/MxShun)
+- [muko](https://github.com/muko)
 
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