Update readme.md

Author: GFW4Fun

readme.md

@@ -14,7 +14,7 @@ x-ui-pro is an open-source project that provides an auto-installation script for
 
 ##
 
-**Install X-UI-PRO**:dvd::package:
+**Install XUI-PRO**:dvd::package:
 
 ```
 sudo su -c "$(command -v apt||echo dnf) -y install wget;bash <(wget -qO- raw.githubusercontent.com/GFW4Fun/x-ui-pro/master/x-ui-pro.sh) -panel 1 -cdn off"