Unify license headers

Author: MaxDesiatov

Sources/Helpers/Vendor/Triple.swift

@@ -1,6 +1,6 @@
 //===--------------- Triple.swift - Swift Target Triples ------------------===//
 //
-// This source file is part of the Swift.org open source project
+// This source file is part of the Swift open source project
 //
 // Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
 // Licensed under Apache License v2.0 with Runtime Library Exception

Sources/Helpers/Vendor/_AsyncFileSystem/WritableStream.swift

@@ -1,5 +1,5 @@
 /*
- This source file is part of the Swift.org open source project
+ This source file is part of the Swift open source project
 
  Copyright (c) 2014 - 2024 Apple Inc. and the Swift project authors
  Licensed under Apache License v2.0 with Runtime Library Exception

Tests/MacrosTests/MacrosTests.swift

@@ -1,6 +1,6 @@
 //===----------------------------------------------------------------------===//
 //
-// This source file is part of the Swift.org open source project
+// This source file is part of the Swift open source project
 //
 // Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
 // Licensed under Apache License v2.0 with Runtime Library Exception