Add documentation for sensor platform in bosch_alarm (#38347)

* add docs for sensor

* add notes about third sensor

* remove history sensor

* Update source/_integrations/bosch_alarm.markdown

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>

* Update source/_integrations/bosch_alarm.markdown

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>

* update docs

---------

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>

source/_integrations/bosch_alarm.markdown

@@ -3,6 +3,7 @@ title: Bosch Alarm
 description: Integrate Bosch Alarms.
 ha_category:
   - Alarm
+  - Sensor
 ha_release: 2025.4
 ha_iot_class: Local Push
 ha_config_flow: true
@@ -12,6 +13,7 @@ ha_codeowners:
 ha_domain: bosch_alarm
 ha_platforms:
   - alarm_control_panel
+  - sensor
 ha_integration_type: integration
 ---
 
@@ -34,12 +36,17 @@ The **Bosch Alarm Panel** {% term integration %} allows you to connect your [Bos
 The following {% term entities %} are provided:
 
 - [Alarm Control Panel](#alarm-control-panel)
+- [Sensor](#sensor)
 
 ### Alarm Control Panel
 
 This integration adds an Alarm Control Panel device for each configured area, with the ability to issue arm/disarm commands.
 This entity reports state (_disarmed_, _armed_away_, etc.).
 
+## Sensor
+
+A sensor is provided per area that lists how many points are currently in a faulted state.
+
 ## Authentication
 
 The primary means of authentication for the _Mode 2_ API is the _Automation_ passcode. It needs to be at least 10 characters long, and it is different from the _User_ code -- a shorter numeric pin used to arm/disarm the panel.