Update CHANGELOG.md

Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>

Author: pftg

CHANGELOG.md

@@ -61,7 +61,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add Quick Setup guide, tolerance table, and CI defaults note ([#786a0c1](https://github.com/donv/capybara-screenshot-diff/commit/786a0c1))
 - Add development guide for Docker testing and screenshot recording ([#8a7c981](https://github.com/donv/capybara-screenshot-diff/commit/8a7c981))
 - Add DeepWiki badge to README ([#0929cfa](https://github.com/donv/capybara-screenshot-diff/commit/0929cfa))
-- Add about DEBUG to README ([#c1a53c3](https://github.com/donv/capybara-screenshot-diff/commit/c1a53c3))
+- Document DEBUG in README ([#c1a53c3](https://github.com/donv/capybara-screenshot-diff/commit/c1a53c3))
 
 ### Build/CI
 - Upgrade dependencies for modern environment compatibility ([#d387627](https://github.com/donv/capybara-screenshot-diff/commit/d387627))