Update dashy-v5.sh

set default storage 6GB

ct/dashy-v5.sh

@@ -20,7 +20,7 @@ EOF
 header_info
 echo -e "Loading..."
 APP="Dashy"
-var_disk="3"
+var_disk="6"
 var_cpu="2"
 var_ram="2048"
 var_os="debian"