fix appx:dev task
fix appx:dev task

codedecay/appx-starter,codedecay/appx-starter,MicrosoftEdge/appx-starter,modulexcite/appx-starter,MicrosoftEdge/gulp-appx,MicrosoftEdge/appx-starter,MicrosoftEdge/gulp-appx,modulexcite/appx-starter