Update SG cookbook (#48182)
Update SG cookbook (#48182)

* Add incremental section

* Add example warning
diryboy/roslyn,tmat/roslyn,dotnet/roslyn,brettfo/roslyn,weltkante/roslyn,mavasani/roslyn,eriawan/roslyn,panopticoncentral/roslyn,bartdesmet/roslyn,sharwell/roslyn,heejaechang/roslyn,diryboy/roslyn,stephentoub/roslyn,AlekseyTs/roslyn,ErikSchierboom/roslyn,gafter/roslyn,wvdd007/roslyn,jasonmalinowski/roslyn,diryboy/roslyn,stephentoub/roslyn,KevinRansom/roslyn,shyamnamboodiripad/roslyn,KirillOsenkov/roslyn,wvdd007/roslyn,tannergooding/roslyn,brettfo/roslyn,KirillOsenkov/roslyn,mgoertz-msft/roslyn,tmat/roslyn,aelij/roslyn,KirillOsenkov/roslyn,bartdesmet/roslyn,brettfo/roslyn,weltkante/roslyn,jasonmalinowski/roslyn,mavasani/roslyn,AlekseyTs/roslyn,gafter/roslyn,tmat/roslyn,AmadeusW/roslyn,KevinRansom/roslyn,heejaechang/roslyn,jasonmalinowski/roslyn,bartdesmet/roslyn,physhi/roslyn,tannergooding/roslyn,mgoertz-msft/roslyn,mgoertz-msft/roslyn,weltkante/roslyn,eriawan/roslyn,KevinRansom/roslyn,shyamnamboodiripad/roslyn,AlekseyTs/roslyn,AmadeusW/roslyn,shyamnamboodiripad/roslyn,aelij/roslyn,tannergooding/roslyn,CyrusNajmabadi/roslyn,CyrusNajmabadi/roslyn,physhi/roslyn,eriawan/roslyn,AmadeusW/roslyn,ErikSchierboom/roslyn,panopticoncentral/roslyn,stephentoub/roslyn,sharwell/roslyn,wvdd007/roslyn,dotnet/roslyn,physhi/roslyn,gafter/roslyn,sharwell/roslyn,mavasani/roslyn,CyrusNajmabadi/roslyn,panopticoncentral/roslyn,dotnet/roslyn,heejaechang/roslyn,ErikSchierboom/roslyn,aelij/roslyn