Update WindowsBuild.md
Update WindowsBuild.md

Change the LLDB python flag.
jckarter/swift,rudkx/swift,roambotics/swift,hooman/swift,JGiola/swift,stephentyrone/swift,aschwaighofer/swift,atrick/swift,parkera/swift,jmgc/swift,jmgc/swift,allevato/swift,airspeedswift/swift,benlangmuir/swift,gregomni/swift,allevato/swift,roambotics/swift,benlangmuir/swift,aschwaighofer/swift,harlanhaskins/swift,tkremenek/swift,ahoppen/swift,apple/swift,roambotics/swift,benlangmuir/swift,parkera/swift,jmgc/swift,CodaFi/swift,allevato/swift,glessard/swift,CodaFi/swift,harlanhaskins/swift,tkremenek/swift,benlangmuir/swift,stephentyrone/swift,airspeedswift/swift,benlangmuir/swift,nathawes/swift,allevato/swift,ahoppen/swift,harlanhaskins/swift,hooman/swift,rudkx/swift,JGiola/swift,jmgc/swift,gregomni/swift,xwu/swift,gregomni/swift,roambotics/swift,apple/swift,rudkx/swift,jckarter/swift,stephentyrone/swift,stephentyrone/swift,harlanhaskins/swift,gregomni/swift,stephentyrone/swift,jmgc/swift,apple/swift,hooman/swift,ahoppen/swift,atrick/swift,jckarter/swift,allevato/swift,atrick/swift,parkera/swift,ahoppen/swift,airspeedswift/swift,xwu/swift,glessard/swift,glessard/swift,harlanhaskins/swift,rudkx/swift,harlanhaskins/swift,nathawes/swift,apple/swift,CodaFi/swift,rudkx/swift,allevato/swift,gregomni/swift,JGiola/swift,ahoppen/swift,jmgc/swift,atrick/swift,stephentyrone/swift,atrick/swift,nathawes/swift,glessard/swift,aschwaighofer/swift,benlangmuir/swift,atrick/swift,aschwaighofer/swift,xwu/swift,apple/swift,hooman/swift,jckarter/swift,xwu/swift,xwu/swift,airspeedswift/swift,CodaFi/swift,tkremenek/swift,tkremenek/swift,roambotics/swift,aschwaighofer/swift,xwu/swift,parkera/swift,airspeedswift/swift,jckarter/swift,allevato/swift,tkremenek/swift,nathawes/swift,roambotics/swift,ahoppen/swift,tkremenek/swift,xwu/swift,airspeedswift/swift,hooman/swift,aschwaighofer/swift,CodaFi/swift,jckarter/swift,JGiola/swift,stephentyrone/swift,parkera/swift,JGiola/swift,parkera/swift,hooman/swift,jmgc/swift,glessard/swift,rudkx/swift,gregomni/swift,parkera/swift,glessard/swift,apple/swift,JGiola/swift,hooman/swift,harlanhaskins/swift,tkremenek/swift,aschwaighofer/swift,nathawes/swift,airspeedswift/swift,CodaFi/swift,nathawes/swift,CodaFi/swift,jckarter/swift,nathawes/swift,parkera/swift