Docs: Corrected the changelog. [skip ci]

CHANGELOG.md

@@ -39,9 +39,9 @@ Major releases (contain breaking changes):
 * [@ckeditor/ckeditor5-utils](https://www.npmjs.com/package/@ckeditor/ckeditor5-utils): v11.1.0 => [v12.0.0](https://github.com/ckeditor/ckeditor5-utils/releases/tag/v12.0.0)
 * [@ckeditor/ckeditor5-widget](https://www.npmjs.com/package/@ckeditor/ckeditor5-widget): v10.3.1 => [v11.0.0](https://github.com/ckeditor/ckeditor5-widget/releases/tag/v11.0.0)
 
-### Other changes
+### BREAKING CHANGES
 
-* Upgraded minimal versions of Node and npm. See: [ckeditor/ckeditor5#1507](https://github.com/ckeditor/ckeditor5/issues/1507). ([862abc7](https://github.com/ckeditor/ckeditor5-build-decoupled-document/commit/862abc7))
+* Upgraded minimal versions of Node to `8.0.0` and npm to `5.7.1`. See: [ckeditor/ckeditor5#1507](https://github.com/ckeditor/ckeditor5/issues/1507). ([612ea3c](https://github.com/ckeditor/ckeditor5-cloud-services/commit/612ea3c))
 
 
 ## [11.2.0](https://github.com/ckeditor/ckeditor5-build-decoupled-document/compare/v11.1.1...v11.2.0) (2018-12-05)