Add PR to the changelog

Author: antonwolfy

CHANGELOG.md

@@ -12,6 +12,7 @@ This release changes the license from `BSD-2-Clause` to `BSD-3-Clause`.
 
 * Added the docstrings to `dpnp.linalg.LinAlgError` exception [#2613](https://github.com/IntelPython/dpnp/pull/2613)
 * Added implementation of `dpnp.linalg.lu_solve` for batch inputs (SciPy-compatible) [#2619](https://github.com/IntelPython/dpnp/pull/2619)
+* Added implementation of `dpnp.special.erfcx` [#2596](https://github.com/IntelPython/dpnp/pull/2596)
 
 ### Changed