CHANGELOG: add description for patch 1528

Author: dannywillems

CHANGELOG.md

@@ -69,11 +69,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **ledger/scan_state/transaction_logic**: move submodule `for_tests` into a
   new file `zkapp_command/for_tests.rs`
   ([#1527](https://github.com/o1-labs/mina-rust/pull/1527)).
-- **ledger/scan_state/transaction_logic**: update OCaml references in `mod.rs`
-  ([#1525](https://github.com/o1-labs/mina-rust/pull/1525))
-- **ledger/scan_state/transaction_logic**: move submodule `for_tests` into a
-  new file `zkapp_command/for_tests.rs`
-  ([#1527](https://github.com/o1-labs/mina-rust/pull/1527)).
+- **Ledger/scan-state/transaction-logic**: split
+  `ledger::scan_state::transaction_logic::zkapp_command` into submodules in a
+  new directory `zkapp_command`
+  ([#1528](https://github.com/o1-labs/mina-rust/pull/1528/))
 
 ## v0.17.0