update changelog

Author: cp-bagerard

docs/changelog.rst

@@ -8,13 +8,9 @@ Development
 - (Fill this out as you fix issues and develop your features).
 - Add Mongo 4.0 to Travis
 - Fixed a bug causing inaccurate query results, while combining ``__raw__`` and regular filters for the same field #2264
-- Add support for the `elemMatch` projection operator in .fields (e.g BlogPost.objects.fields(elemMatch__comments="test")) #2267
-
-Changes in 0.19.2
-=================
+- Add support for the `elemMatch` projection operator in .fields() (e.g BlogPost.objects.fields(elemMatch__comments="test")) #2267
 - DictField validate failed without default connection (bug introduced in 0.19.0) #2239
 
-
 Changes in 0.19.1
 =================
 - Requires Pillow < 7.0.0 as it dropped Python2 support