docs: release notes for the v2.0.2 version

Author: josantonius

CHANGELOG.md

@@ -1,5 +1,11 @@
 # CHANGELOG
 
+## [v2.0.2](https://github.com/josantonius/php-session/releases/tag/v2.0.2) (2022-06-29)
+
+* Fix readme namespace. Fixes [#13](https://github.com/josantonius/php-session/issues/13).
+
+* Replace symbol in start method comment.
+
 ## [v2.0.1](https://github.com/josantonius/php-session/releases/tag/v2.0.1) (2022-06-28)
 
 * Changes in documentation.