feat: add PR number to CHANGELOG entries

CHANGELOG.md

@@ -11,16 +11,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- `is_valid_p256_signature` utility function to `openzeppelin_account::utils::signature` (#)
-- `Secp256r1KeyPair` type and helpers to `openzeppelin_testing::signing` (#)
+- `is_valid_p256_signature` utility function to `openzeppelin_account::utils::signature` (#1189)
+- `Secp256r1KeyPair` type and helpers to `openzeppelin_testing::signing` (#1189)
 - Embeddable impls for ERC2981 component (#1173)
   - `ERC2981Info` with read functions for discovering the component's state
   - `ERC2981AdminOwnable` providing admin functions for a token that implements Ownable component
   - `ERC2981AdminAccessControl` providing admin functions for a token that implements AccessControl component
 
 ### Changed (Breaking)
 
-- Refactor `openzeppelin_account::utils::secp256k1` module to `openzeppelin_account::utils::secp256_point` (#)
+- Refactor `openzeppelin_account::utils::secp256k1` module to `openzeppelin_account::utils::secp256_point` (#1189)
   - `Secp256k1PointStorePacking` replaced by a generic `Secp256PointStorePacking`
   - `Secp256k1PointPartialEq` replaced by a generic `Secp256PointPartialEq`
   - `DebugSecp256k1Point` replaced by a generic `DebugSecp256Point`