Update installation.md

Author: lewislarsen

installation.md

@@ -5,7 +5,7 @@ This guide provides step-by-step instructions for installing Vanguard, a web app
 
 ## Prerequisites
 
-- PHP 8.1 or higher
+- PHP 8.3 or higher
 - Composer
 - Node.js and npm
 - PostgreSQL database
@@ -164,4 +164,4 @@ Remember to check the changelog for any breaking changes or additional update st
 Always backup your database and project files before performing updates.
 :::
 
-For more detailed information, consult the official documentation for Laravel, Reverb, Horizon, and Pulse.
+For more detailed information, consult the official documentation for Laravel, Reverb, Horizon, and Pulse.