Prepare CHANGELOG for version 0.25.1

Author: robinst

CHANGELOG.md

@@ -6,7 +6,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 with the exception that 0.x versions can break between minor versions.
 
-## Unreleased
+## [0.25.1] - 2025-08-01
 ### Fixed
 - footnotes: Fix parsing of footnote definitions containing multiple paragraphs
   separated by blank lines. Before it only worked if paragraphs were separated
@@ -480,6 +480,7 @@ API breaking changes (caused by changes in spec):
 Initial release of commonmark-java, a port of commonmark.js with extensions
 for autolinking URLs, GitHub flavored strikethrough and tables.
 
+[0.25.1]: https://github.com/commonmark/commonmark-java/compare/commonmark-parent-0.25.0...commonmark-parent-0.25.1
 [0.25.0]: https://github.com/commonmark/commonmark-java/compare/commonmark-parent-0.24.0...commonmark-parent-0.25.0
 [0.24.0]: https://github.com/commonmark/commonmark-java/compare/commonmark-parent-0.23.0...commonmark-parent-0.24.0
 [0.23.0]: https://github.com/commonmark/commonmark-java/compare/commonmark-parent-0.22.0...commonmark-parent-0.23.0