docs: release notes for the v2.0.5 version

Author: josantonius

CHANGELOG.md

@@ -1,5 +1,13 @@
 # CHANGELOG
 
+## [v2.0.5](https://github.com/josantonius/php-json/releases/tag/v2.0.5) (2022-08-11)
+
+* The exceptions directory was renamed from `exception` to `exceptions`.
+
+* Improved documentation.
+
+* Improved doc comments in `Josantonius\Json\Json`.
+
 ## [v2.0.4](https://github.com/josantonius/php-json/releases/tag/v2.0.4) (2022-07-13)
 
 * Fix exceptions comment.