Update 2.8.0 release notes

Signed-off-by: Sacha Telgenhof <[email protected]>

Author: stelgenhof

docs/releases/2.8.0.md

@@ -8,24 +8,22 @@ As such the [CHANGELOG.md](/CHANGELOG.md) file will now only include changes mad
 
 Highlights of version 2.8.0
 
-## New Providers:
+## New Providers
 
 - Bulgaria - Complete holiday coverage for Bulgaria
 - Iran - Added support for Iranian holidays
 
-## Major Features:
+## Major Features
 
 - Brazil now supports Black Consciousness Day
 - Enhanced Canada support with Nunavut Day for Nunavut province
 - Ireland adds Saint Brigid's Day support
 - Mexico includes new Transmission of Federal Executive Power Holiday
 - Poland now includes Christmas Eve as a public holiday starting 2025
 
-## Notable Improvements:
+## Notable Improvements
 
 - Better handling of substitute holidays and observance classifications
 - Dropped PHP 8.0 support, added PHP 8.4 compatibility
 - Enhanced documentation and code quality
 - Extensive fixes for Ireland, Scotland, Ukraine, Mexico, Portugal, and Germany
-
-#**Full Changelog**: https://github.com/azuyalabs/yasumi/compare/2.7.0...2.8.0