docs: Highlight correct section for breaking changes

RELEASES.md

@@ -51,7 +51,7 @@ case-by-case basis.
 We strive to make stboot upgrades easy and well-documented. Any
 complications that are caused by changed configuration syntax,
 command-line flags, or similar, will be clearly outlined in the [NEWS
-file](./NEWS). Pay close attention to the "Breaking changes" section
+file](./NEWS). Pay close attention to the "Incompatible changes" section
 before upgrading to a new version.
 
 Downgrading is in general not supported.