Log the rachio webhook url (#34992)

homeassistant/components/rachio/__init__.py

@@ -123,7 +123,11 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
     if not person.controllers:
         _LOGGER.error("No Rachio devices found in account %s", person.username)
         return False
-    _LOGGER.info("%d Rachio device(s) found", len(person.controllers))
+    _LOGGER.info(
+        "%d Rachio device(s) found; The url %s must be accessible from the internet in order to receive updates",
+        len(person.controllers),
+        webhook_url,
+    )
 
     # Enable component
     hass.data[DOMAIN][entry.entry_id] = person