the hyperlink for "以Windows为编译环境" has no response

[zyq55917]

https://github.com/aitos-io/BoAT-X-Framework/tree/master/demo

该问题一般是因为在Windows下进行编译，但未安装Cygwin，或者未在Makefile中正确配置BOAT_RM、BOAT_MKDIR、BOAT_FIND的路径。请参照以Windows为编译环境章节安装Cygwin和配置Makefile。

[PanHH]

Same issue with #699