Noted the change in CHANGELOG.md

Author: oleksandr-pavlyk

CHANGELOG.md

@@ -50,6 +50,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * Fixed `dpctl.lsplatform()` to work correctly when used from within Jupyter notebook [#800](https://github.com/IntelPython/dpctl/pull/800).
 * Fixed script to drive debug build [#835](https://github.com/IntelPython/dpctl/pull/835) and fixed code to compile in debug mode [#836](https://github.com/IntelPython/dpctl/pull/836).
+* Fixed issue with slicing reported in gh-870 in [#871](https://github.com/IntelPython/dpctl/pull/871).
 
 ## [0.12.0] - 03/01/2022