[draytonwiser] Fix error in readme where boost duration was given wro…

…ng quantity type

Signed-off-by: Andrew Schofield <the.uncle.fungus@gmail.com>

bundles/org.openhab.binding.draytonwiser/README.md

@@ -131,15 +131,15 @@ The `awaySetPoint` defines the temperature in degrees Celsius that will be sent
 |-------------------------|--------------|--------------------------------------------|
 | `manualModeState` | Switch | Has manual mode been enabled |
 | `hotWaterSetPoint` | Switch | The current hot water setpoint (on or off) |
-| `hotWaterBoostDuration` | Number:Time | Period in hours to boost the hot water |
+| `hotWaterBoostDuration` | Number  | Period in hours to boost the hot water |
 
 #### Room
 
 | Channel | Item Type | Description |
 |------------------------|--------------------|------------------------------------------------|
 | `currentSetPoint` | Number:Temperature | The current set point temperature for the room |
 | `manualModeState` | Switch | Has manual mode been enabled |
-| `roomBoostDuration` | Number:Time | Period in hours to boost the room temperature |
+| `roomBoostDuration` | Number  | Period in hours to boost the room temperature |
 | `windowStateDetection` | Switch | Detect whether windows are open |
 
 #### Room Stat