fix changelog formatting issues

Author: Trivo25

CHANGELOG.md

@@ -33,11 +33,17 @@ This project adheres to
   - Now only a single method is analyzed at a time.
 
 ### Changed
-- `IndexedMerkleMap` has been promoted from the `Experimental` namespace and is now part of the public API. https://github.com/o1-labs/o1js/pull/2114
-- 
+
+- `IndexedMerkleMap` has been promoted from the `Experimental` namespace and is
+  now part of the public API. https://github.com/o1-labs/o1js/pull/2114
+-
+
 ### Fixed
-- The `IndexedMerkleMap` root now includes the tree length in its root(commitment), addressing a vulnerability where a malicious user could insert a larger leaf and render the tree unreconstructable by others.
-  
+
+- The `IndexedMerkleMap` root now includes the tree length in its
+  root(commitment), addressing a vulnerability where a malicious user could
+  insert a larger leaf and render the tree unreconstructable by others.
+
 ## [2.6.0](https://github.com/o1-labs/o1js/compare/4e23a60...3eef10d) - 2025-05-30
 
 ### Added