Update docs changelog (for PR #57772) (#57980)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Vanessa <vgrl@github.com>

Author: 3 people

CHANGELOG.md

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 # Docs changelog
 
+**14 October 2025**
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+We've added a new tutorial about how to [Review AI-generated code](https://docs.github.com/en/copilot/tutorials/review-ai-generated-code). The article gives techniques to verify and validate AI-generated code, and also suggests how Copilot can help with reviews.
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+<hr>
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 **13 October 2025**
 
 To help large enterprises keep their automations secure and consistent across many organizations, we published [Automating app installations in your enterprise's organizations](https://docs.github.com/en/enterprise-cloud@latest/admin/managing-github-apps-for-your-enterprise/automate-installations). This is one of the most requested features from customer feedback.