message: useFieldArray default value example fix
diff: @@ -1242,7 +1242,7 @@ React.useEffect(() => {
  rawData={`{fields.map((data, index) =>
  <input
  key={data.id}
  - defaultValue={\`data[\${index}].value\`}
  + defaultValue={data.value}
  name={\`data[\${index}].value\`}
  />;
  );}`}
  