Update proposals/NNNN-contiguous-collection.md
Update proposals/NNNN-contiguous-collection.md

Co-Authored-By: airspeedswift <f6358031b01ba395cdd151dcadd901fffc88c517@users.noreply.github.com>
rballard/swift-evolution,rballard/swift-evolution,ddunbar/swift-evolution,ddunbar/swift-evolution,natecook1000/swift-evolution,airspeedswift/swift-evolution,hartbit/swift-evolution,Nirma/swift-evolution,Nirma/swift-evolution,DevAndArtist/swift-evolution,allevato/swift-evolution,natecook1000/swift-evolution,abertelrud/swift-evolution,DevAndArtist/swift-evolution,hartbit/swift-evolution,allevato/swift-evolution,anandabits/swift-evolution,apple/swift-evolution,anandabits/swift-evolution,apple/swift-evolution,abertelrud/swift-evolution,airspeedswift/swift-evolution