[gardena] Adapt to the official wording (openhab#7277)

Signed-off-by: Reto Schneider <code@reto-schneider.ch>
Signed-off-by: CSchlipp <christian@schlipp.de>

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

@@ -1,20 +1,20 @@
 # Gardena Binding
 
-This is the binding for [Gardena Smart Home](https://www.gardena.com/de/rasenpflege/smartsystem/).
-This binding allows you to integrate, view and control Gardena Smart Home devices in the openHAB environment.
+This is the binding for [Gardena smart system](https://www.gardena.com/de/rasenpflege/smartsystem/).
+This binding allows you to integrate, view and control Gardena smart system devices in the openHAB environment.
 
 ## Supported Things
 
-Devices connected to Gardena Smart Home, currently:
+Devices connected to Gardena smart system, currently:
 
 | Thing type | Name |
 |--------------------------|--------------------------|
-| bridge | smart Home Gateway  |
+| bridge | smart Garden Gateway |
 | mower | smart Sileno(+) Mower |
 | watering_computer | smart Water Control |
 | sensor | smart Sensor |
 | electronic_pressure_pump | smart Pressure Pump |
-| power | smart Power Plug |
+| power | smart Power   |
 | ic24 | smart Irrigation Control |
 
 The schedules are not yet integrated!
@@ -27,13 +27,13 @@ An account must be specified, all things for an account are discovered automatic
 
 There are several settings for an account:
 
-| Name | Required | Description |
-|-----------------------|----------|----------------------------------------------------------------------------------------|
-| **email** | yes | The email address for logging into the Gardena Smart Home |
-| **password** | yes | The password for logging into the Gardena Smart Home |
-| **sessionTimeout** | no | The timeout in minutes for a session to Gardena Smart Home (default = 30) |
-| **connectionTimeout** | no | The timeout in seconds for connections to Gardena Smart Home (default = 10) |
-| **refresh** | no | The interval in seconds for refreshing the data from Gardena Smart Home (default = 60) |
+| Name | Required | Description  |
+|-----------------------|----------|------------------------------------------------------------------------------------------|
+| **email** | yes | The email address for logging into the Gardena smart system |
+| **password** | yes | The password for logging into the Gardena smart system |
+| **sessionTimeout** | no | The timeout in minutes for a session to Gardena smart system (default = 30) |
+| **connectionTimeout** | no | The timeout in seconds for connections to Gardena smart system (default = 10) |
+| **refresh** | no | The interval in seconds for refreshing the data from Gardena smart system (default = 60) |
 
 **Example**