change username dialog to reflect previous change

manjaro-arm-installer

@@ -456,7 +456,7 @@ fi
 if [ ! -z "$EDITION" ]; then
 	USER=$(dialog --clear --title "Manjaro ARM Installer" \
 	--inputbox "Enter the username you want:
-(usernames most be all lowercase)" 8 50 \
+(usernames must be all lowercase and first character may not be a number)" 8 50 \
 	3>&1 1>&2 2>&3 3>&-)
     if [[ "$USER" =~ [A-Z] ]] || [[ "$USER" =~ ^[0-9] ]] || [[ "$USER" == *['!'@#\$%^\&*()_+]* ]]; then
     clear