Update changelog

CHANGELOG.md

@@ -1,6 +1,9 @@
 # Release Notes
 
 ## [Unreleased](https://github.com/pixelfed/pixelfed/compare/v0.11.1...dev)
+### Updated
+- Updated NotificationService, fix 500 bug. ([4a609dc3](https://github.com/pixelfed/pixelfed/commit/4a609dc3))
+-  ([](https://github.com/pixelfed/pixelfed/commit/))
 
 ## [v0.11.1 (2021-09-07)](https://github.com/pixelfed/pixelfed/compare/v0.11.0...v0.11.1)
 ### Added
@@ -112,7 +115,6 @@
 - Updated DirectMessageController, fix autocomplete bug. ([0f00be4d](https://github.com/pixelfed/pixelfed/commit/0f00be4d))
 - Updated StoryService, fix division by zero bug. ([6ae1ba0a](https://github.com/pixelfed/pixelfed/commit/6ae1ba0a))
 - Updated ApiV1Controller, fix empty public timeline bug. ([0584f9ee](https://github.com/pixelfed/pixelfed/commit/0584f9ee))
--  ([](https://github.com/pixelfed/pixelfed/commit/))
 
 ## [v0.11.0 (2021-06-01)](https://github.com/pixelfed/pixelfed/compare/v0.10.10...v0.11.0)
 ### Added