Update README.md

Author: alancolant

README.md

@@ -13,7 +13,6 @@ This repository contains a CaddyServer module for processing images on the fly u
 
 ## Prerequisites
 
-- [Caddy >= 2.8.0-beta.1](https://caddyserver.com/) installed on your system
 - [libvips](https://libvips.github.io/libvips/install.html) installed on your system
 - [libvips-dev](https://libvips.github.io/libvips/install.html) installed on your system (only for xcaddy build)