Fix example (#43910)
Fix example (#43910)

The snippet's curly braces should be escaped due to the `$`. The `$` isn't actually necessary, so I removed it.
KevinRansom/roslyn,sharwell/roslyn,bartdesmet/roslyn,mavasani/roslyn,KevinRansom/roslyn,shyamnamboodiripad/roslyn,AlekseyTs/roslyn,aelij/roslyn,weltkante/roslyn,eriawan/roslyn,jmarolf/roslyn,gafter/roslyn,tannergooding/roslyn,brettfo/roslyn,jasonmalinowski/roslyn,wvdd007/roslyn,dotnet/roslyn,AmadeusW/roslyn,wvdd007/roslyn,aelij/roslyn,physhi/roslyn,stephentoub/roslyn,sharwell/roslyn,CyrusNajmabadi/roslyn,diryboy/roslyn,tannergooding/roslyn,tannergooding/roslyn,tmat/roslyn,physhi/roslyn,mgoertz-msft/roslyn,heejaechang/roslyn,panopticoncentral/roslyn,AmadeusW/roslyn,wvdd007/roslyn,panopticoncentral/roslyn,AlekseyTs/roslyn,physhi/roslyn,heejaechang/roslyn,tmat/roslyn,KirillOsenkov/roslyn,tmat/roslyn,panopticoncentral/roslyn,KirillOsenkov/roslyn,weltkante/roslyn,mavasani/roslyn,gafter/roslyn,jmarolf/roslyn,stephentoub/roslyn,diryboy/roslyn,mgoertz-msft/roslyn,heejaechang/roslyn,jmarolf/roslyn,genlu/roslyn,davkean/roslyn,davkean/roslyn,genlu/roslyn,eriawan/roslyn,davkean/roslyn,bartdesmet/roslyn,shyamnamboodiripad/roslyn,ErikSchierboom/roslyn,ErikSchierboom/roslyn,dotnet/roslyn,mgoertz-msft/roslyn,AmadeusW/roslyn,eriawan/roslyn,sharwell/roslyn,gafter/roslyn,CyrusNajmabadi/roslyn,weltkante/roslyn,AlekseyTs/roslyn,aelij/roslyn,shyamnamboodiripad/roslyn,diryboy/roslyn,ErikSchierboom/roslyn,brettfo/roslyn,jasonmalinowski/roslyn,dotnet/roslyn,jasonmalinowski/roslyn,bartdesmet/roslyn,mavasani/roslyn,genlu/roslyn,KevinRansom/roslyn,CyrusNajmabadi/roslyn,KirillOsenkov/roslyn,brettfo/roslyn,stephentoub/roslyn