Fix changelog

CHANGELOG.rst

@@ -42,6 +42,8 @@ Changed
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 * uWSGI is now installed together with AlekSIS-Core per default.
+* Introduce Holiday model to track information about holidays.
+* Created field for child groups in the GraphQL type for groups.
 
 Fixed
 ~~~~~
@@ -54,12 +56,6 @@ Fixed
 * [Docker] Clear obsolete bundle parts when adding apps using ONBUILD
 * Extensible forms that used a subset of fields did not render properly
 
-Added
-~~~~~
-
-* Introduce Holiday model to track information about holidays.
-* Created field for child groups in the GraphQL type for groups.
-
 `3.1.1` - 2023-07-01
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