Implement list function in Notification controller. (fixed)

src/controller/mod.rs

@@ -5,7 +5,7 @@ use rocket::fairing::AdHoc;
 pub fn route_stage() -> AdHoc {
     return AdHoc::on_ignite("Initializing controller routes...", |rocket| async {
         rocket
-            .mount("/", routes![notification::subscribe, notification::unsubscribe,
-            notification::receive, notification::list]);
+            .mount("/", routes![notification::subscribe, notification::unsubscribe, 
+                notification::receive, notification::list])
     });
 }