docs: fix typo in changelog

Author: mtrezza

CHANGELOG.md

@@ -8,10 +8,10 @@
 [Full Changelog](https://github.com/parse-server-modules/parse-server-push-adapter/compare/3.4.1...4.0.0)
 
 ### BREAKING CHANGE
-- node-apns 5 requires node >= 12 ([#198](https://github.com/parse-community/parse-server-push-adapter/pull/198))
+- node-apn 5 requires node >= 12 ([#198](https://github.com/parse-community/parse-server-push-adapter/pull/198))
 
 ### Bug Fixes
-- bump node-apns to 5.0 ([#198](https://github.com/parse-community/parse-server-push-adapter/pull/198))
+- bump node-apn to 5.0 ([#198](https://github.com/parse-community/parse-server-push-adapter/pull/198))
 
 ## 3.4.1
 [Full Changelog](https://github.com/parse-server-modules/parse-server-push-adapter/compare/3.4.0...3.4.1)