Encoder not working correctly

file:`encoder_menu.py`
line:`56-58` 

```python
def set_encoder(value,min_value,max_value):
    encoder._value = value
    encoder.set(value,min_value,max_value)
```
Correção:
```python
def set_encoder(value,min_value,max_value):
   encoder.set(value=value,min_val=min_value,max_val=max_value)
```