Incremented phoenix cart last tested version

Author: luciandex

README_Phoenix.md

@@ -7,7 +7,7 @@ Released under the GPL V3 license: https://opensource.org/licenses/GPL-3.0
 
 ## Supported osCommerce versions
 
-*The plugin has been tested with osCommerce CE Phoenix up to v1.0.7.18
+*The plugin has been tested with osCommerce CE Phoenix up to v1.0.8.5
 
 ## Installation