Nzbget download event (#10838)

* Add nzbget downloaded event.

* Move raw tags outside the code block

* Match event name to code

source/_integrations/nzbget.markdown

@@ -66,6 +66,35 @@ This component will create these sensors:
 - `nzbget_uptime`: NZBGet server uptime.
 - `nzbget_size`: Amount of data downloaded since server start in MB.
 
+## Event Automation
+
+The NZBGet integration continuously monitors nzbget's download history. When a download completes, an event usable for automation is triggered on the Home Assistant Bus.
+
+Possible events are:
+
+- `nzbget_download_complete`
+
+The event includes the name, category, and status of the downloaded nzb.
+
+Example automation to send a Telegram message on a completed download:
+{% raw %}
+
+```yaml
+- alias: Completed Torrent
+  trigger:
+    platform: event
+    event_type: nzbget_download_complete
+  - event_data:
+    category: tv
+  action:
+    service: notify.telegram_notifier
+    data_template:
+      title: "Download completed!"
+      message: "{{trigger.event.data.name}}"
+```
+
+{% endraw %}
+
 ## Services
 
 Available services: