Add event entities to Folder watcher (#32611)

* Add entities to Folder watcher

* Address comments

* tiny tweaks

---------

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

source/_integrations/folder_watcher.markdown

@@ -7,11 +7,15 @@ ha_iot_class: Local Polling
 ha_config_flow: true
 ha_release: 0.67
 ha_quality_scale: internal
+ha_platforms:
+  - event
 ha_domain: folder_watcher
 ha_integration_type: integration
 ---
 
-The **Folder watcher** {% term integration %} adds [Watchdog](https://pythonhosted.org/watchdog/) file system monitoring, publishing events on the Home Assistant bus on the creation/deletion/modification of files within configured folders. The monitored `event_type` are:
+The **Folder watcher** {% term integration %} adds [Watchdog](https://pythonhosted.org/watchdog/) file system monitoring.
+
+It creates event entities for these monitored event types:
 
 - `closed`
 - `created`
@@ -30,7 +34,7 @@ As example to monitor specific file, as example YAML and text-files add `*.yaml`
 
 ## Automations
 
-The elements the events contain are:
+The attributes the event entities contain are:
 - `event_type`: matching the `event_type` of the filter (one of `created`, `moved`, `modified`, `deleted`, `closed`)
 - `path`: The full path to the file (e.g. "/hello/world.txt")
 - `file`: The name of the file (e.g. "world.txt")
@@ -41,7 +45,7 @@ When the `event_type` is `moved`, the file details are for the source file and d
 - `dest_file`: The name of the moved file (e.g. "world.txt")
 - `dest_folder`: The folder moved path (e.g. "/hello")
 
-Automations can be triggered on filesystem event data using a template. The following automation will send a notification with the name and folder of new files added to that folder:
+Automations can be triggered on file system events data using a template. The following automation will send a notification with the name and folder of new files added to that folder:
 
 {% raw %}
 
@@ -50,17 +54,15 @@ Automations can be triggered on filesystem event data using a template. The foll
 automation:
   alias: "New file alert"
   trigger:
-    platform: event
-    event_type: folder_watcher
-    event_data:
-      event_type: created
+    platform: state
+    entity_id: event.created
   action:
     service: notify.notify
     data:
       title: New image captured!
-      message: "Created {{ trigger.event.data.file }} in {{ trigger.event.data.folder }}"
+      message: "Created {{ trigger.to_state.attributes.file }} in {{ trigger.to_state.attributes.folder }}"
       data:
-        file: "{{ trigger.event.data.path }}"
+        file: "{{ trigger.to_state.attributes.file }}"
 ```
 
 {% endraw %}