Improve License Header by adding a clarifacation

[MacOS]

Hi all,

thank you for your work! May I suggest the following improvement for the license header.

At the moment, the license header is as follows.

jaf-api/api/src/main/java/jakarta/activation/ActivationDataFlavor.java

Lines 1 to 9 in dd51393

	/*
	* Copyright (c) 1997, 2023 Oracle and/or its affiliates. All rights reserved.
	*
	* This program and the accompanying materials are made available under the
	* terms of the Eclipse Distribution License v. 1.0, which is available at
	* http://www.eclipse.org/org/documents/edl-v10.php.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

This header is unclear and may confuse confusion as it states that the project is licensed under Eclipse Distributipn License v. 1.0, but the SPDX license identifier states the BSD-3-Clause. While the equivalence is stated at Eclipse Distribution License - v 1.0
, it is not mentioned on the Open Source Initiative website for the BSD-3-Clause. This goes as far back as v1.2.1.

Based on this, may I suggest the following license header.

/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is equivalent to the BSD-3-Clause.
 * The license text is available at http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

I am happy to open a PR myself if the new license header is approved.

Thank you in advance!

PS: The Website Libraries.io claims that the project is licensed under the Server Side Public License v1.0 (SSPL-1.0).