Add Select platform description for SleepIQ integration (#22117)

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

source/_integrations/sleepiq.markdown

@@ -2,10 +2,14 @@
 title: SleepIQ
 description: Instructions for how to integrate SleepIQ beds within Home Assistant.
 ha_category:
-  - Health
   - Binary Sensor
+  - Button
+  - Health
+  - Light
   - Number
+  - Select
   - Sensor
+  - Switch
 ha_release: 0.29
 ha_iot_class: Cloud Polling
 ha_domain: sleepiq
@@ -19,6 +23,7 @@ ha_platforms:
   - button
   - light
   - number
+  - select
   - sensor
   - switch
 ---
@@ -33,6 +38,7 @@ There is currently support for the following platforms within Home Assistant:
 - Light - Control lights on supported models
 - Number - View/Set the actuator positions of the foundation
 - Number - View/Set firmness for each side
+- Select - Choose a foundation preset position
 - Sensor - View pressure of each side
 - Switch - Toggle Privacy mode