Not enough sponsors on the README.md

### Self Checks / 自检

- [x] I have searched for [existing issues](https://github.com/farion1231/cc-switch/issues), including closed ones.
我已搜索过[已有的 Issue](https://github.com/farion1231/cc-switch/issues)，包括已关闭的。

### Language / 语言

English

### Document Location / 文档位置

README.md#%EF%B8%8Fsponsor

### Issue Type / 问题类型

Missing information / 信息缺失

### Description / 描述

Please add more sponsors, they're only taking half of the README

*Alternative solution*
Or you could just remove everything that's not a sponsor from the README, as nobody scrolls that much

Start at README.md#️sponsor and review the existing sponsor section and surrounding content. Confirm the intended change—adding specific sponsor entries or removing non-sponsor material—and make the section reflect the agreed scope; done when README renders with the approved sponsor content.

Written by the indexing model from the issue text.