message: docs: fix setFieldError/setErrors examples
diff: @@ -286,9 +286,9 @@ const onSubmit = handleSubmit((values, { evt, form }) => {
  // set multiple fields values
  form.setValues({ email: 'value', password: 'hi' });
  // set a single field error
  - form.setFieldValue('field', 'this field is bad');
  + form.setFieldError('field', 'this field is bad');
  // set multiple fields errors
  - form.setValues({ email: 'bad email', password: 'bad password' });
  + form.setErrors({ email: 'bad email', password: 'bad password' });
  });
  ```
  