solve issue 2034 (serialization of ShaderNodeDefinition) (#2035)

jme3-core/src/main/java/com/jme3/shader/ShaderNodeDefinition.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009-2021 jMonkeyEngine
+ * Copyright (c) 2009-2023 jMonkeyEngine
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -201,7 +201,7 @@ public class ShaderNodeDefinition implements Savable {
         oc.write(shadersPath.toArray(str), "shadersPath", null);
         oc.write(type, "type", null);
         oc.writeSavableArrayList((ArrayList) inputs, "inputs", new ArrayList<ShaderNodeVariable>());
-        oc.writeSavableArrayList((ArrayList) outputs, "inputs", new ArrayList<ShaderNodeVariable>());
+        oc.writeSavableArrayList((ArrayList) outputs, "outputs", new ArrayList<ShaderNodeVariable>());
     }
 
     public List<String> getShadersLanguage() {