Added missing ### Changes where necessary.

Author: nedtwigg

CHANGES.md

@@ -10,6 +10,7 @@ This document is intended for Spotless developers.
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Changes
 * Add the `ktlint` rule in error messages when `ktlint` fails to apply a fix ([#1279](https://github.com/diffplug/spotless/pull/1279))
 
 ## [2.28.1] - 2022-08-10

plugin-gradle/CHANGES.md

@@ -3,7 +3,6 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `3.27.0`).
 
 ## [Unreleased]
-
 ### Changes
 * Add the `ktlint` rule in error messages when `ktlint` fails to apply a fix ([#1279](https://github.com/diffplug/spotless/pull/1279))
 

plugin-maven/CHANGES.md

@@ -3,6 +3,7 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Changes
 * Add the `ktlint` rule in error messages when `ktlint` fails to apply a fix ([#1279](https://github.com/diffplug/spotless/pull/1279))
 
 ## [2.24.1] - 2022-08-10