Revise: applied trailing closure syntax to some examples
Revise: applied trailing closure syntax to some examples

- For clearer closure style with shorthand argument names.

apple/swift,ahoppen/swift,apple/swift,ahoppen/swift,benlangmuir/swift,JGiola/swift,ahoppen/swift,benlangmuir/swift,roambotics/swift,benlangmuir/swift,glessard/swift,roambotics/swift,roambotics/swift,glessard/swift,benlangmuir/swift,JGiola/swift,JGiola/swift,JGiola/swift,roambotics/swift,apple/swift,glessard/swift,glessard/swift,benlangmuir/swift,apple/swift,roambotics/swift,glessard/swift,benlangmuir/swift,JGiola/swift,roambotics/swift,ahoppen/swift,apple/swift,ahoppen/swift,ahoppen/swift,glessard/swift,apple/swift,JGiola/swift