Fix typos and formatting in TypeChecker.rst
Fix typos and formatting in TypeChecker.rst

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elmartin/swift,xwu/swift,karwa/swift,alblue/swift,hooman/swift,airspeedswift/swift,benlangmuir/swift,felix91gr/swift,alblue/swift,amraboelela/swift,frootloops/swift,roambotics/swift,djwbrown/swift,modocache/swift,stephentyrone/swift,therealbnut/swift,practicalswift/swift,codestergit/swift,karwa/swift,allevato/swift,MukeshKumarS/Swift,xwu/swift,therealbnut/swift,karwa/swift,brentdax/swift,ahoppen/swift,huonw/swift,dreamsxin/swift,tinysun212/swift-windows,gribozavr/swift,jtbandes/swift,gregomni/swift,rudkx/swift,return/swift,swiftix/swift,hooman/swift,natecook1000/swift,milseman/swift,jmgc/swift,russbishop/swift,gregomni/swift,tinysun212/swift-windows,frootloops/swift,xedin/swift,ahoppen/swift,adrfer/swift,devincoughlin/swift,shahmishal/swift,felix91gr/swift,bitjammer/swift,JaSpa/swift,devincoughlin/swift,gribozavr/swift,manavgabhawala/swift,parkera/swift,devincoughlin/swift,harlanhaskins/swift,airspeedswift/swift,kstaring/swift,bitjammer/swift,russbishop/swift,kstaring/swift,brentdax/swift,frootloops/swift,natecook1000/swift,amraboelela/swift,return/swift,austinzheng/swift,johnno1962d/swift,CodaFi/swift,rudkx/swift,tkremenek/swift,alblue/swift,danielmartin/swift,Jnosh/swift,zisko/swift,jmgc/swift,alblue/swift,codestergit/swift,shajrawi/swift,natecook1000/swift,gottesmm/swift,ben-ng/swift,tardieu/swift,natecook1000/swift,CodaFi/swift,shajrawi/swift,JaSpa/swift,tinysun212/swift-windows,gottesmm/swift,devincoughlin/swift,kperryua/swift,JaSpa/swift,milseman/swift,stephentyrone/swift,tardieu/swift,shajrawi/swift,calebd/swift,brentdax/swift,slavapestov/swift,shahmishal/swift,Jnosh/swift,atrick/swift,glessard/swift,gribozavr/swift,johnno1962d/swift,jtbandes/swift,brentdax/swift,milseman/swift,modocache/swift,deyton/swift,nathawes/swift,hughbe/swift,JGiola/swift,ken0nek/swift,zisko/swift,jopamer/swift,atrick/swift,codestergit/swift,cbrentharris/swift,brentdax/swift,calebd/swift,gmilos/swift,apple/swift,allevato/swift,adrfer/swift,parkera/swift,nathawes/swift,apple/swift,JaSpa/swift,brentdax/swift,codestergit/swift,djwbrown/swift,ken0nek/swift,gmilos/swift,dduan/swift,kstaring/swift,amraboelela/swift,tkremenek/swift,deyton/swift,tinysun212/swift-windows,JaSpa/swift,allevato/swift,xedin/swift,lorentey/swift,parkera/swift,felix91gr/swift,gribozavr/swift,ahoppen/swift,practicalswift/swift,calebd/swift,lorentey/swift,uasys/swift,Jnosh/swift,kperryua/swift,djwbrown/swift,johnno1962d/swift,uasys/swift,KrishMunot/swift,danielmartin/swift,kperryua/swift,jopamer/swift,hughbe/swift,JGiola/swift,lorentey/swift,rudkx/swift,gribozavr/swift,jckarter/swift,arvedviehweger/swift,atrick/swift,frootloops/swift,xwu/swift,dduan/swift,devincoughlin/swift,SwiftAndroid/swift,parkera/swift,sschiau/swift,SwiftAndroid/swift,MukeshKumarS/Swift,harlanhaskins/swift,CodaFi/swift,harlanhaskins/swift,tjw/swift,gottesmm/swift,uasys/swift,zisko/swift,huonw/swift,IngmarStein/swift,xedin/swift,frootloops/swift,jmgc/swift,calebd/swift,bitjammer/swift,gmilos/swift,practicalswift/swift,austinzheng/swift,SwiftAndroid/swift,zisko/swift,jmgc/swift,bitjammer/swift,bitjammer/swift,lorentey/swift,dduan/swift,jckarter/swift,modocache/swift,ken0nek/swift,aschwaighofer/swift,frootloops/swift,jmgc/swift,stephentyrone/swift,natecook1000/swift,gmilos/swift,parkera/swift,lorentey/swift,amraboelela/swift,IngmarStein/swift,russbishop/swift,alblue/swift,sschiau/swift,gottesmm/swift,zisko/swift,shahmishal/swift,gregomni/swift,jckarter/swift,slavapestov/swift,slavapestov/swift,allevato/swift,hughbe/swift,apple/swift,cbrentharris/swift,gmilos/swift,shajrawi/swift,hooman/swift,tjw/swift,shahmishal/swift,apple/swift,tardieu/swift,johnno1962d/swift,nathawes/swift