Updates to support the circuitpython version (home-assistant#15161)

Co-authored-by: Angelo Gagliano <[email protected]>

source/_integrations/dht.markdown

@@ -13,24 +13,32 @@ ha_platforms:
 
 The `dht` sensor platform allows you to get the current temperature and humidity from a DHT11, DHT22 or AM2302 device.
 
+## Setup
+
+To use your DHTxx sensor in your installation, you must first install the `libgpiod2` library.
+
+```shell
+sudo apt install libgpiod2
+```
+
 ## Configuration
 
-To use your DHTxx sensor in your installation, add the following to your `configuration.yaml` file:
+Add the following to your `configuration.yaml` file:
 
 ```yaml
 # Example configuration.yaml entry
 sensor:
   platform: dht
   sensor: DHT22
-  pin: 23
+  pin: D23
   monitored_conditions:
     - temperature
     - humidity
 ```
 
 {% configuration %}
 sensor:
-  description: The sensor type, supported devices are DHT11, DHT22, and AM2302.
+  description: The sensor type, supported devices are DHT11, DHT22 and AM2302.
   required: true
   type: string
 pin:
@@ -63,7 +71,7 @@ humidity_offset:
   type: [integer, float]
 {% endconfiguration %}
 
-The name of the pin to which the sensor is connected has different names on different platforms. 'P8_11' for Beaglebone, '23' for Raspberry Pi.
+The name of the pin to which the sensor is connected has different names on different platforms. 'P8_11' for Beaglebone, 'D23' for Raspberry Pi.
 
 ### Example
 
@@ -73,7 +81,7 @@ An example for a Raspberry Pi 3 with a DHT22 sensor connected to GPIO4 (pin 7):
 sensor:
   - platform: dht
     sensor: DHT22
-    pin: 4
+    pin: D4
     temperature_offset: 2.1
     humidity_offset: -3.2
     monitored_conditions: