Update CHANGELOG.md

Author: cristianoc

CHANGELOG.md

@@ -15,8 +15,11 @@
 - Add surface syntax for `async`/`await` https://github.com/rescript-lang/syntax/pull/600
 
 - Initial support for JSX V4, still work in progress.
+
   - :boom: when V4 is activated, at most one component is allowed for each module.
 
+- Add support for empty record literal `{}` for records with only optional fields https://github.com/rescript-lang/syntax/pull/632
+
 #### :bug: Bug Fix
 
 - Fix issue where the printer would omit attributes for `->` and `|>` https://github.com/rescript-lang/syntax/pull/629