Update WindowsBuild.md
Update WindowsBuild.md

Fix stray case of ICU 63.1 path to 64.2
gribozavr/swift,karwa/swift,jmgc/swift,gribozavr/swift,gribozavr/swift,benlangmuir/swift,rudkx/swift,gribozavr/swift,ahoppen/swift,xwu/swift,benlangmuir/swift,hooman/swift,allevato/swift,devincoughlin/swift,jmgc/swift,glessard/swift,roambotics/swift,JGiola/swift,jckarter/swift,xedin/swift,stephentyrone/swift,devincoughlin/swift,parkera/swift,CodaFi/swift,CodaFi/swift,apple/swift,airspeedswift/swift,airspeedswift/swift,aschwaighofer/swift,aschwaighofer/swift,lorentey/swift,allevato/swift,parkera/swift,tkremenek/swift,rudkx/swift,JGiola/swift,JGiola/swift,jmgc/swift,apple/swift,apple/swift,jckarter/swift,CodaFi/swift,atrick/swift,sschiau/swift,allevato/swift,airspeedswift/swift,devincoughlin/swift,xedin/swift,gregomni/swift,nathawes/swift,hooman/swift,lorentey/swift,shahmishal/swift,lorentey/swift,harlanhaskins/swift,benlangmuir/swift,stephentyrone/swift,gribozavr/swift,rudkx/swift,tkremenek/swift,xedin/swift,airspeedswift/swift,xedin/swift,karwa/swift,atrick/swift,harlanhaskins/swift,xwu/swift,karwa/swift,roambotics/swift,jmgc/swift,karwa/swift,karwa/swift,devincoughlin/swift,stephentyrone/swift,nathawes/swift,JGiola/swift,tkremenek/swift,parkera/swift,lorentey/swift,parkera/swift,xedin/swift,nathawes/swift,roambotics/swift,JGiola/swift,xwu/swift,gribozavr/swift,roambotics/swift,shahmishal/swift,aschwaighofer/swift,shahmishal/swift,harlanhaskins/swift,shahmishal/swift,nathawes/swift,apple/swift,karwa/swift,glessard/swift,lorentey/swift,shahmishal/swift,harlanhaskins/swift,CodaFi/swift,atrick/swift,tkremenek/swift,shahmishal/swift,lorentey/swift,gregomni/swift,allevato/swift,glessard/swift,rudkx/swift,sschiau/swift,roambotics/swift,ahoppen/swift,aschwaighofer/swift,xedin/swift,hooman/swift,apple/swift,ahoppen/swift,parkera/swift,devincoughlin/swift,xwu/swift,gribozavr/swift,gregomni/swift,gregomni/swift,xwu/swift,jmgc/swift,stephentyrone/swift,xwu/swift,jmgc/swift,JGiola/swift,benlangmuir/swift,ahoppen/swift,allevato/swift,apple/swift,jckarter/swift,xedin/swift,harlanhaskins/swift,sschiau/swift,tkremenek/swift,gribozavr/swift,hooman/swift,gregomni/swift,gregomni/swift,hooman/swift,harlanhaskins/swift,rudkx/swift,jckarter/swift,glessard/swift,atrick/swift,sschiau/swift,lorentey/swift,jckarter/swift,airspeedswift/swift,rudkx/swift,atrick/swift,nathawes/swift,tkremenek/swift,lorentey/swift,stephentyrone/swift,CodaFi/swift,parkera/swift,karwa/swift,allevato/swift,nathawes/swift,sschiau/swift,airspeedswift/swift,shahmishal/swift,xedin/swift,atrick/swift,parkera/swift,sschiau/swift,shahmishal/swift,nathawes/swift,allevato/swift,airspeedswift/swift,glessard/swift,xwu/swift,stephentyrone/swift,roambotics/swift,CodaFi/swift,sschiau/swift,ahoppen/swift,hooman/swift,jckarter/swift,parkera/swift,benlangmuir/swift,jmgc/swift,tkremenek/swift,glessard/swift,devincoughlin/swift,jckarter/swift,hooman/swift,sschiau/swift,aschwaighofer/swift,benlangmuir/swift,stephentyrone/swift,karwa/swift,ahoppen/swift,devincoughlin/swift,devincoughlin/swift,CodaFi/swift,harlanhaskins/swift,aschwaighofer/swift,aschwaighofer/swift