Fixes indentation of code to 2 spaces
Fixes indentation of code to 2 spaces

tkester/swift-algorithm-club,jawwad/swift-algorithm-club,raywenderlich/swift-algorithm-club,hollance/swift-algorithm-club,tkester/swift-algorithm-club,raywenderlich/swift-algorithm-club,raywenderlich/swift-algorithm-club,jawwad/swift-algorithm-club,jawwad/swift-algorithm-club