官方示例的package-example中，所依赖的f-my等平台的包均不存在，无法运行示例

[lz1084342435]

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Reproduction link

https://github.com/antvis/F2/tree/master/packages/f2-my/examples/test

Steps to reproduce

运行仓库的支付宝/微信/xxx 平台的example中 项目均无法运行，因为旧版本包已不存在，并且官方对应的网站也均失效。是否会维护demo

Environment	Info
f2	5.5.2
System	-
Browser	-