updated keygen logo

README.md

@@ -137,7 +137,7 @@ Plugins and themes can be installed directly from the Settings view inside Tabby
 
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-[![](https://user-images.githubusercontent.com/161476/193406404-1784f40c-eaba-44d0-af11-d8bd35517382.png)](https://keygen.sh/?via=eugene)
+[![](https://user-images.githubusercontent.com/161476/200423885-7aba2202-fea7-4409-95b9-3a062ce902c7.png)](https://keygen.sh/?via=eugene)
 
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