Match the copyright comment used elsewhere.

Author: amartini51

Sources/TSPL/TSPL.docc/header.html

@@ -1,12 +1,13 @@
 <!--
-  This source file is part of the Swift.org open source project
+This source file is part of the Swift.org open source project
 
-  Copyright (c) 2022 Apple Inc. and the Swift project authors
-  Licensed under Apache License v2.0 with Runtime Library Exception
+Copyright (c) 2014 - 2022 Apple Inc. and the Swift project authors
+Licensed under Apache License v2.0 with Runtime Library Exception
 
-  See https://swift.org/LICENSE.txt for license information
-  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
+See https://swift.org/LICENSE.txt for license information
+See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 -->
+
 <header id="header" role="banner">
     <div class="container">
         <aside style="border-radius: 20px; border: 2px solid goldenrod; background: rgba(230, 241, 69, 0.625); padding: 5px; margin: 5px;">