update test script

test_startup.sh

@@ -4,7 +4,7 @@ run() {
     output=`{ timeout 10 python3 $1; } 2>&1`
     exitcode=$?
     test $exitcode -eq 124 && exitcode=0 # exitcode 124 is comming from "timeout command above"
-    echo $output | grep "JustPy ready to go" > /dev/null || exitcode=1
+    echo $output | grep "NiceGUI ready to go" > /dev/null || exitcode=1
     echo $output | grep "Traceback" > /dev/null && exitcode=1
     echo $output | grep "Error" > /dev/null && exitcode=1
     if test $exitcode -ne 0; then