add FAQ to support page (#1459)

Co-authored-by: Denis Oliana <[email protected]>

docs/support.md

@@ -1,4 +1,40 @@
-Support
+# Support
 =======
 
+- [General](#general)
+- [FAQ](#faq)
+  - [too many notifications in home assistant](#too-many-notifications-in-home-assistant)
+
+## General
+
 If you need help, check out our [forum](https://github.com/lbbrhzn/ocpp/discussions) or submit an [issue](https://github.com/lbbrhzn/ocpp/issues).
+
+## FAQ
+
+### too many notifications in home assistant
+
+The OCPP sends a notification when the charger is rebooted. This can be due to a bad network connection. The notifications can be managed with automations in home assistant. (see https://github.com/lbbrhzn/ocpp/discussions/938)
+
+Example:
+
+```
+trigger:
+  - platform: persistent_notification
+    update_type:
+      - added
+    notification_id: ""
+condition:
+  - condition: template
+    value_template: "{{ trigger.notification.title | lower == \"ocpp integration\" }}"
+action:
+  - delay:
+      hours: 0
+      minutes: 10
+      seconds: 0
+      milliseconds: 0
+  - service: persistent_notification.dismiss
+    data:
+      notification_id: "{{ trigger.notification.notification_id }}"
+mode: parallel
+max: 10
+```