[gardening] Fix recently introduced header.

Author: practicalswift

stdlib/private/StdlibCollectionUnittest/RangeSelection.swift

@@ -1,8 +1,8 @@
-//===--- RangeSelection.swift.gyb ----------------------------*- swift -*-===//
+//===--- RangeSelection.swift ---------------------------------*- swift -*-===//
 //
 // This source file is part of the Swift.org open source project
 //
-// Copyright (c) 2016 - 2016 Apple Inc. and the Swift project authors
+// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
 // Licensed under Apache License v2.0 with Runtime Library Exception
 //
 // See http://swift.org/LICENSE.txt for license information