update changelog

Author: msuliq

CHANGELOG.md

@@ -21,9 +21,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 * Added
   * None
 * Fixed
-  * [#768](https://github.com/binarylogic/authlogic/issues/768) - Fixed
-    compatibility issues with Rails 7.1
-   * [#769](https://github.com/binarylogic/authlogic/issues/769) - Fixed GH workflow
+  * [#769](https://github.com/binarylogic/authlogic/issues/769) - Fixed GH workflow
 
 ## 6.4.2 (2021-12-21)