Add missing file copyright notice

Co-authored-by: Arthit Suriyawongkul <[email protected]>

Author: goneall

examples/org/spdx/examples/ExpandedLicenseExampleV3.java

@@ -1,3 +1,12 @@
+/**
+ * SPDX-FileContributor: Gary O'Neall
+ * SPDX-FileCopyrightText: Copyright (c) 2025 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Example of serializing a single expanded license
+ */
+
 package org.spdx.examples;
 
 import com.fasterxml.jackson.databind.JsonNode;