website: Updated copyright year to 2025

Author: NightOwl888

websites/site/docfx.json

@@ -41,7 +41,7 @@
       "_appFaviconPath": "logo/favicon.ico",
       "_enableSearch": false,
       "_appLogoPath": "logo/lucene-net-color.png",
-      "_appFooter": "Copyright &copy; 2024 The Apache Software Foundation, Licensed under the <a href='http://www.apache.org/licenses/LICENSE-2.0' target='_blank'>Apache License, Version 2.0</a><br/> <small>Apache Lucene.Net, Lucene.Net, Apache, the Apache feather logo, and the Apache Lucene.Net project logo are trademarks of The Apache Software Foundation. <br/>All other marks mentioned may be trademarks or registered trademarks of their respective owners.</small>",
+      "_appFooter": "Copyright &copy; 2025 The Apache Software Foundation, Licensed under the <a href='http://www.apache.org/licenses/LICENSE-2.0' target='_blank'>Apache License, Version 2.0</a><br/> <small>Apache Lucene.Net, Lucene.Net, Apache, the Apache feather logo, and the Apache Lucene.Net project logo are trademarks of The Apache Software Foundation. <br/>All other marks mentioned may be trademarks or registered trademarks of their respective owners.</small>",
       "_gitContribute": {
         "repo": "https://github.com/apache/lucenenet",
         "branch": "master"