Fix spellCheck prop naming in CHANGELOG

Fix `spellCheck` prop naming convention to camelCase to resolve React warning.

Author: Freymaurer

src/Feliz/CHANGELOG.md

@@ -16,16 +16,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### 🐛 Fixed
+
+- Fix `spellCheck` html prop naming convention from lowercase to camelCase, causing React warning "Invalid DOM property" (by @mjblacker)
+
 ## 3.0.0 - 2025-12-10
 
 ### ✨ Added
 
 - Added `onTransitionStart` event handler support (by @Freymaurer)
 
-### 🐛 Fixed
-
-- Fix `spellCheck` html prop naming convention from lowercase to camelCase, causing React warning "Invalid DOM property" (by @mjblacker)
-
 ## 3.0.0-rc.16 - 2025-12-05
 
 ### ✨ Added