Update CHANGELOG.md

CHANGELOG.md

@@ -36,6 +36,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - Automatically found pdf files now have the linking button to the far left and uses a link icon with a plus instead of a briefcase. The file name also has lowered opacity(70%) until added. [#3607](https://github.com/JabRef/jabref/issues/3607)
 - We simplified the select entry type form by splitting it into two parts ("Recommended" and "Others") based on internal usage data. [#6730](https://github.com/JabRef/jabref/issues/6730)
 - The export to MS Office XML now uses the month name for the field `Month` instead of the two digit number [forum#2685](https://discourse.jabref.org/t/export-month-as-text-not-number/2685)
+- Lists of available fields are now sorted alphabetically. [#7716](https://github.com/JabRef/jabref/issues/7716)
 
 ### Fixed