Actually use the api_key

src/send_notification.py

@@ -8,7 +8,7 @@ api_key= return_credentials("/etc/secrets/api_key")
 
 def send_notification(title:str,chapter:int, link:str):
 	headers = {
-		"X-API-Key-Internal": backend_api_url,
+		"X-API-Key-Internal": api_key,
 		"Content-Type": "application/json"
 		}