Change minimum deadzone step to match changes in converter for ZWT198_ZWT100-BH

Change minimum deadzone step to match changes in converter
Conventer pull request
Koenkk/zigbee-herdsman-converters#8100

Author: Vangreen

docs/devices/ZWT198_ZWT100-BH.md

@@ -81,7 +81,7 @@ The delta between local_temperature (5<t<35)and current_heating_setpoint to trig
 Value can be found in the published state on the `deadzone_temperature` property.
 It's not possible to read (`/get`) this value.
 To write (`/set`) a value publish a message to topic `zigbee2mqtt/FRIENDLY_NAME/set` with payload `{"deadzone_temperature": NEW_VALUE}`.
-The minimal value is `0.5` and the maximum value is `10`.
+The minimal value is `0.1` and the maximum value is `10`.
 The unit of this value is `°C`.
 Besides the numeric values the following values are accepted: `default`.