Switch donation method from BMC to Kofi

.github/FUNDING.yml

@@ -1,3 +1,2 @@
-custom:
-  - https://www.buymeacoffee.com/coteschung
-  - https://cotes.gitee.io/alipay-wechat-donation
+ko_fi: coteschung
+custom: https://cotes.gitee.io/alipay-wechat-donation

README.md

@@ -226,7 +226,7 @@ Last but not least, thank [JetBrains][jb] for providing the open source license.
 
 If you like this theme or find it helpful, please consider sponsoring me, because it will encourage and help me better maintain the project, I will be very grateful!
 
-[![Buy Me a Coffee](https://img.shields.io/badge/-Buy%20Me%20a%20Coffee-ff813f?logo=buy-me-a-coffee&logoColor=white)](https://www.buymeacoffee.com/coteschung)
+[![Ko-fi](https://img.shields.io/badge/-Buy%20Me%20a%20Coffee-ff5f5f?logo=ko-fi&logoColor=white)](https://ko-fi.com/coteschung)
 [![Wechat Pay](https://img.shields.io/badge/-Tip%20Me%20on%20WeChat-brightgreen?logo=wechat&logoColor=white)][cn-donation]
 [![Alipay](https://img.shields.io/badge/-Tip%20Me%20on%20Alipay-blue?logo=alipay&logoColor=white)][cn-donation]
 

docs/README.zh-CN.md

@@ -224,7 +224,7 @@ $ docker run -it --rm \
 
 如果您喜欢此款主题或者它对您有帮助，请考虑打赏作者，您的支持将会极大地鼓励作者，并帮助作者更好地维护项目！
 
-[![Buy Me a Coffee](https://img.shields.io/badge/-请作者喝杯咖啡-ff813f?logo=buy-me-a-coffee&logoColor=white)](https://www.buymeacoffee.com/coteschung)
+[![Ko-fi](https://img.shields.io/badge/-请作者喝杯咖啡-ff5f5f?logo=ko-fi&logoColor=white)](https://ko-fi.com/coteschung)
 [![Wechat Pay](https://img.shields.io/badge/-微信打赏作者-brightgreen?logo=wechat&logoColor=white)][cn-donation]
 [![Alipay](https://img.shields.io/badge/-支付宝打赏作者-blue?logo=alipay&logoColor=white)][cn-donation]