修復github錯誤
1.Failed to connect to github.com port 443:Timed out 执行如下命令: git config --global --unset http.proxy git config --global --unset https.proxy
1.Failed to connect to github.com port 443:Timed out 执行如下命令: git config --global --unset http.proxy git config --global --unset https.proxy