Update CHANGELOG.md

Author: adel-mamin

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [0-based versioning](https://0ver.org/).
 
 ## [Unreleased]
 
+## v0.13.0 - 3-August-2025
+
 ### Added
 
 - Assert that AO start-up is complete before event publishing.
@@ -17,7 +19,7 @@ and this project adheres to [0-based versioning](https://0ver.org/).
 - [Cigarette Smokers Problem](https://en.wikipedia.org/wiki/Cigarette_smokers_problem) solution.
 - New `AM_ATOMIC_FETCH_ADD()` macro for atomic addition.
 - Clarification examples to FSM and HSW return macros.
-- `AM_CONTAINER_OF()` macro unit test.x
+- `AM_CONTAINER_OF()` macro unit test.
 
 ### Changed