improved polybox upload instructions in printout

setup_eth_euler/create_printout.sh

@@ -52,8 +52,8 @@ function create_md {
         echo '```'
         echo "bash upload_to_polybox.sh"
         echo '```'
-        echo "and press RETURN."
-        echo
+        echo "and press RETURN. The script will ask you for your NETHZ name"
+        echo "and password."
         echo '<p style="page-break-after: always;" />'
     done
 }