Fix changelog links.

Author: nedtwigg

CHANGES.md

@@ -11,7 +11,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 
 ## [Unreleased]
 ### Fixed
-* Fix Clang not knowing the filename and changing the format ([#1267](https://github.com/diffplug/spotless/pull/1268))
+* Fix Clang not knowing the filename and changing the format ([#1268](https://github.com/diffplug/spotless/pull/1268) fixes [#1267](https://github.com/diffplug/spotless/issues/1267)).
 
 ## [2.28.0] - 2022-07-28
 ### Added

plugin-gradle/CHANGES.md

@@ -4,7 +4,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 
 ## [Unreleased]
 ### Fixed
-* Fix Clang not knowing the filename and changing the format ([#1267](https://github.com/diffplug/spotless/pull/1268))
+* Fix Clang not knowing the filename and changing the format ([#1268](https://github.com/diffplug/spotless/pull/1268) fixes [#1267](https://github.com/diffplug/spotless/issues/1267)).
 
 ## [6.9.0] - 2022-07-28
 ### Added

plugin-maven/CHANGES.md

@@ -4,7 +4,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 
 ## [Unreleased]
 ### Fixed
-* Fix Clang not knowing the filename and changing the format ([#1267](https://github.com/diffplug/spotless/pull/1268))
+* Fix Clang not knowing the filename and changing the format ([#1268](https://github.com/diffplug/spotless/pull/1268) fixes [#1267](https://github.com/diffplug/spotless/issues/1267)).
 
 ## [2.24.0] - 2022-07-28
 ### Added