Update changelog

Author: rmk135

docs/main/changelog.rst

@@ -7,6 +7,12 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly 
 follows `Semantic versioning`_
 
+Development version
+-------------------
+- Add support of aliases for ``Configuration`` provider.
+ See issue: `#394 <https://github.com/ets-labs/python-dependency-injector/issues/394>`_.
+ Thanks to `@gtors <https://github.com/gtors>`_ for suggesting the feature.
+
 4.22.1
 ------
 - Pin ``sphinx`` version to hotfix docs build.