Fixed variable names in FlowTests.cs from using "meter".
Fixed variable names in FlowTests.cs from using "meter".

BrandonLWhite/UnitsNet,BrandonLWhite/UnitsNet,BoGrevyDynatest/UnitsNet,Tirael/UnitsNet,maherkassim/UnitsNet,anjdreas/UnitsNet,anjdreas/UnitsNet,maherkassim/UnitsNet,neutmute/UnitsNet