Update README.md

Author: igorkasyanchuk

README.md

@@ -840,4 +840,4 @@ The gem is available as open source under the terms of the [MIT License](https:/
 [<img src="https://github.com/igorkasyanchuk/rails_time_travel/blob/main/docs/more_gems.png?raw=true"
 />](https://www.railsjazz.com/?utm_source=github&utm_medium=bottom&utm_campaign=active_storage_validations)
 
-[!["Buy Me A Coffee"](https://github.com/igorkasyanchuk/get-smart/blob/main/docs/snapshot-bmc-button-small.png?raw=true)](https://buymeacoffee.com/igorkasyanchuk)
+[!["Buy Me A Coffee"](https://github.com/igorkasyanchuk/get-smart/blob/main/docs/snapshot-bmc-button.png?raw=true)](https://buymeacoffee.com/igorkasyanchuk)