[doc] There is no CN-English documents in README.

[ModestYjx]

references:

1. https://github.com/vueComponent/ant-design-vue-pro
2. https://pro.ant.design/zh-CN/docs/overview

[ModestYjx]

Update the README.md to latest and high-quality:
eg:
Replace backending with backend: https://github.com/Cheer-for-fun/open-stulife-sdk-backend/blob/main/README.md?plain=1#L8

https://github.com/Cheer-for-fun/open-stulife-sdk-backend/blob/main/README.md?plain=1#L10