Update license within js files

Further to #160, make license changes to tslib.d.ts, tslib.es6.js and tslib.js files too
2021-11-25 16:00:00 +00:00 · 2021-11-25 16:00:00 +00:00 · 5b8af4ee90
--- a/tslib.d.ts
+++ b/tslib.d.ts
@ -1,4 +1,4 @@
-/*! *****************************************************************************
+/******************************************************************************
 Copyright (c) Microsoft Corporation.

 Permission to use, copy, modify, and/or distribute this software for any
--- a/tslib.es6.js
+++ b/tslib.es6.js
@ -1,4 +1,4 @@
-/*! *****************************************************************************
+/******************************************************************************
 Copyright (c) Microsoft Corporation.

 Permission to use, copy, modify, and/or distribute this software for any
--- a/tslib.js
+++ b/tslib.js
@ -1,4 +1,4 @@
-/*! *****************************************************************************
+/******************************************************************************
 Copyright (c) Microsoft Corporation.

 Permission to use, copy, modify, and/or distribute this software for any