[NF] Update delay test.

Belonging to [master]:
  - OpenModelica/OMCompiler#2552
  - OpenModelica/OpenModelica-testsuite#995

Author: perost

flattening/modelica/scodeinst/FuncBuiltinDelay.mo

@@ -15,7 +15,7 @@ end FuncBuiltinDelay;
 // Result:
 // class FuncBuiltinDelay
 //   Real x = time;
-//   Real y = delay(x, 1.0);
+//   Real y = delay(x, 1.0, 1.0);
 //   Real z = delay(x, 2.0, 3.0);
 // end FuncBuiltinDelay;
 // endResult