chore: Add missing changelog entry

Author: NickLarsenNZ

crates/stackable-operator/CHANGELOG.md

@@ -29,6 +29,7 @@ All notable changes to this project will be documented in this file.
   - Import are now more granular in general.
 - BREAKING: Update to `kube` to `1.0.0` and `k8s-openapi` to `0.25.0`.
   Use k8s `1.33` for compilation ([#1037]).
+- Separate some developer docs from CRD descriptions ([#1040]).
 
 ### Fixed
 
@@ -39,6 +40,7 @@ All notable changes to this project will be documented in this file.
 [#1025]: https://github.com/stackabletech/operator-rs/pull/1025
 [#1029]: https://github.com/stackabletech/operator-rs/pull/1029
 [#1037]: https://github.com/stackabletech/operator-rs/pull/1037
+[#1040]: https://github.com/stackabletech/operator-rs/pull/1040
 
 ## [0.92.0] - 2025-04-14