Update cedar-policy/CHANGELOG.md

Signed-off-by: Aaron Eline <[email protected]>

Co-authored-by: Kesha Hietala <[email protected]>

Author: Aaron Eline

cedar-policy/CHANGELOG.md

@@ -26,7 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Removed
 
 - Reduced precision of partial evaluation for `||`, `&&`,  and conditional expressions.
-- Removed the `error` extension function
+- Removed the `error` extension function, which was previously used during partial evaluation.
 - Removed integration testing harness from the `cedar-policy` crate. It is now
   in an internal crate, allowing us to make semver incompatible changes. (#857)
 - Removed the (deprecated) `frontend` module in favor of the new `ffi` module