Update CHANGELOG.md

Author: cristianoc

CHANGELOG.md

@@ -15,6 +15,7 @@
 #### :bug: Bug fix
 
 - Fix node.js ExperimentalWarning. https://github.com/rescript-lang/rescript/pull/7379
+- Fix issue wiht gentype and stdlib json. https://github.com/rescript-lang/rescript/pull/7378
 
 #### :house: Internal
 
@@ -27,7 +28,6 @@
 - Fix `Error.fromException`. https://github.com/rescript-lang/rescript/pull/7364
 - Fix signature of `throw`. https://github.com/rescript-lang/rescript/pull/7365
 - Fix formatter adds superfluous parens in pipe chain. https://github.com/rescript-lang/rescript/pull/7370
-- Fix issue wiht gentype and stdlib json. https://github.com/rescript-lang/rescript/pull/7378
 
 #### :house: Internal