Update README.md
Mention of the need to enable the `logger` component for the `report_unknown` option
@@ -260,7 +260,7 @@ Note: The encryptors parameter is only needed for sensors, for which it is [poin
#### report_unknown
- (boolean)(Optional) This option is needed primarily for those who want to request an implementation of device support that is not in the list of [supported sensors](#supported-sensors). If you set this parameter to `True`, then the component will log all messages from unknown Xiaomi ecosystem devices to the Home Assitant log. **Attention!** Enabling this option can lead to huge output to the Home Assistant log, do not enable it if you do not need it! Details in the [FAQ](https://github.com/custom-components/sensor.mitemp_bt/blob/master/faq.md#my-sensor-from-the-xiaomi-ecosystem-is-not-in-the-list-of-supported-ones-how-to-request-implementation). Default value: False
+ (boolean)(Optional) This option is needed primarily for those who want to request an implementation of device support that is not in the list of [supported sensors](#supported-sensors). If you set this parameter to `True`, then the component will log all messages from unknown Xiaomi ecosystem devices to the Home Assitant log (`logger` component must be enabled). **Attention!** Enabling this option can lead to huge output to the Home Assistant log, do not enable it if you do not need it! Details in the [FAQ](https://github.com/custom-components/sensor.mitemp_bt/blob/master/faq.md#my-sensor-from-the-xiaomi-ecosystem-is-not-in-the-list-of-supported-ones-how-to-request-implementation). Default value: False
#### whitelist
