slightly improved Changelog structure

CHANGELOG.md

@@ -11,28 +11,31 @@ This project follows the official Firefox releases, but also uses
 
 ### Added
 
-- DoH disabled by default
 - Remove Internal Plugin Certificates from Mozilla
 
+### Changed
+
+- DoH disabled by default
+
 ### Fixed
 
 - Some default addons from Mozilla are now removed (#59)
 
 ## [75.0-1] - 2020-04-08
 
-### Added
+### Changed
 
 - New upstream release 75.0
 
 ## [74.0.1-1] - 2020-04-04
 
-### Added
+### Changed
 
 - New upstream release 74.0.1
 
 ## [74.0-5] - 2020-04-01
 
-### Added
+### Changed
 
 - WebRTC related settings unlocked (but still disabled) in `librewolf.cfg`