Possible bug in set_automatic_recalibration

Line 119 in scd30.py in `set_automatic_recalibration` currently has
```python
        self.i2c.writeto_mem(self.addr, self.SET_FRC, data, addrsize=16)
```
Based on the SCD30 interface description, shouldn't this be
```python
        self.i2c.writeto_mem(self.addr, self.SET_ASC, data, addrsize=16)
```
i.e. writing SET_ASC (0x5306) instead of SET_FRC (0x5204)?