Updated CHANGELOG.md file

Author: bohdan-harniuk

CHANGELOG.md

@@ -19,6 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0).
 
 ### Fixed
 
+- Fixed create an observer for an event doesn't work through the context menu [#1166](https://github.com/magento/magento2-phpstorm-plugin/pull/1166)
 - Fixed IOException: Invalid file name at ReportBuilder [#1154](https://github.com/magento/magento2-phpstorm-plugin/pull/1154)
 - Fixed IllegalArgumentException in NewModuleAction class [#1150](https://github.com/magento/magento2-phpstorm-plugin/pull/1150)
 - Fixed null data in ModuleIndex class [#1132](https://github.com/magento/magento2-phpstorm-plugin/pull/1132)