Add changelog entry for tuning of elementwise functions

Author: oleksandr-pavlyk

CHANGELOG.md

@@ -8,7 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-### Change
+### Changed
 
 * Improved performance of copy-and-cast operations from `numpy.ndarray` to `tensor.usm_ndarray` for contiguous inputs [gh-1829](https://github.com/IntelPython/dpctl/pull/1829)
 * Improved performance of copying operation to C-/F-contig array, with optimization for batch of square matrices [gh-1850](https://github.com/IntelPython/dpctl/pull/1850)
@@ -31,6 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Build translation unit "simplify_iteration_space.cpp" compiled multiple times as a static library [gh-1847](https://github.com/IntelPython/dpctl/pull/1847)
 * Fix warning in documentation generation caused by `diff` docstring [gh-1855](https://github.com/IntelPython/dpctl/pull/1855)
 * Fix additional warnings when generating docs [gh-1861](https://github.com/IntelPython/dpctl/pull/1861)
+* Tuning work for elementwise functions with modest performance gains (under 10%) [gh-1889](https://github.com/IntelPython/dpctl/pull/1889)
 
 ## [0.18.1] - Oct. 11, 2024