New docs for monoprice config flow (#12480)

* New docs for monoprice config flow

* ✏️ Add config flow

* ✏️ Tweak

Co-authored-by: Klaas Schoute <klaas_schoute@hotmail.com>
Co-authored-by: Franck Nijhof <frenck@frenck.nl>

source/_integrations/monoprice.markdown

@@ -4,6 +4,7 @@ description: Instructions on how to integrate Monoprice 6-Zone Home Audio Contro
 ha_category:
   - Media Player
 ha_release: 0.56
+ha_config_flow: true
 ha_iot_class: Local Polling
 ha_codeowners:
   - '@etsinko'
@@ -12,53 +13,21 @@ ha_domain: monoprice
 
 The `monoprice` platform allows you to control [Monoprice 6-Zone Amplifier](https://www.monoprice.com/product?p_id=10761) using a serial connection.
 
-To add a Monoprice device to your installation, add the following to your `configuration.yaml` file:
+## Configuration
 
-```yaml
-# Example configuration.yaml entry
-media_player:
-  - platform: monoprice
-    port: /dev/ttyUSB0
-    zones:
-      11:
-        name: Main Bedroom
-      12:
-        name: Living Room
-      13:
-        name: Kitchen
-      14:
-        name: Bathroom
-      15:
-        name: Dining Room
-      16:
-        name: Guest Bedroom
-    sources:
-      1:
-        name: Sonos
-      5:
-        name: Chromecast
-```
+Menu: **Configuration** -> **Integrations**.
 
-{% configuration %}
-port:
-  description: The serial port to which Monoprice amplifier is connected.
-  required: true
-  type: string
-zones:
-  description: This is the list of zones available. Valid zones are 11, 12, 13, 14, 15 or 16. In case multiple Monoprice devices are stacked together the list of valid zones is extended by 21, 22, 23, 24, 25 or 26 for the second device and 31, 32, 33, 34, 35 or 36 for the third device. Each zone must have a name assigned to it.
-  required: true
-  type: integer
-sources:
-  description: The list of sources available. Valid source numbers are 1, 2, 3, 4, 5 or 6. Each source number corresponds to the input number on the Monoprice amplifier. Similar to zones, each source must have a name assigned to it.
-  required: true
-  type: integer
-{% endconfiguration %}
+Click on the `+` sign to add an integration and click on **Monoprice**.
+Select the serial port to which Monoprice amplifier is connected, and name the six sources (leave sources you're not using empty).
+
+## Services
 
 ### Service `monoprice.snapshot`
 
-Take a snapshot of one or more zones' states. This service, and the following one are useful if you want to play a doorbell or notification sound and resume playback afterward. If no `entity_id` is provided, all zones are snapshotted.
+Take a snapshot of one or more zones' states. This service, and the following one are useful if you want to play a doorbell or notification sound and resume playback afterward. If `entity_id` is `all`, all zones are snapshotted.
 
 The following attributes are stored in a snapshot:
+
 - Power status (On/Off)
 - Mute status (On/Off)
 - Volume level
@@ -70,7 +39,7 @@ The following attributes are stored in a snapshot:
 
 ### Service `monoprice.restore`
 
-Restore a previously taken snapshot of one or more speakers. If no `entity_id` is provided, all zones are restored.
+Restore a previously taken snapshot of one or more speakers. If `entity_id` is `all`, all zones are restored.
 
 | Service data attribute | Optional | Description |
 | ---------------------- | -------- | ----------- |