Update AlphaStreamsFeeModel.cs
Update AlphaStreamsFeeModel.cs

Includes forgotten AS Fee Model changes

jameschch/Lean,StefanoRaggi/Lean,StefanoRaggi/Lean,jameschch/Lean,jameschch/Lean,StefanoRaggi/Lean,AlexCatarino/Lean,QuantConnect/Lean,AlexCatarino/Lean,StefanoRaggi/Lean,jameschch/Lean,QuantConnect/Lean,QuantConnect/Lean,StefanoRaggi/Lean,JKarathiya/Lean,AlexCatarino/Lean,AlexCatarino/Lean,JKarathiya/Lean,QuantConnect/Lean,JKarathiya/Lean,jameschch/Lean,JKarathiya/Lean