Humidifier lovelace card (#13636)

Co-authored-by: Franck Nijhof <git@frenck.dev>

source/_lovelace/humidifier.markdown

@@ -1,19 +1,24 @@
 ---
 title: "Humidifier Card"
 sidebar_label: Humidifier
-description: "The Humidifier card lets you control and monitor humidifiers, dehumidifiers, and hygrostat devices."
+description: "The Humidifier card gives control of your humidifier entity, allowing you to change the target humidity and mode of the entity."
 ---
 
 The Humidifier card lets you control and monitor humidifiers, dehumidifiers, and hygrostat devices.
 
+<p class='img'>
+  <img src='/images/lovelace/lovelace_humidifier_card.png' alt='Screenshot of the humidifier card'>
+  Screenshot of the humidifier card.
+</p>
+
 {% configuration %}
 type:
   required: true
-  description: entity
+  description: humidifier
   type: string
 entity:
   required: true
-  description: Home Assistant entity ID.
+  description: Entity id of `humidifier` domain
   type: string
 name:
   required: false