added comment

packages/app/src/server/service/in-app-notification.ts

@@ -20,10 +20,12 @@ class InAppNotificationService {
   }
 
   initCommentEvent(): void {
+    // create
     this.commentEvent.on('create', (user) => {
       this.commentEvent.onCreate();
     });
 
+    // update
     this.commentEvent.on('update', (user) => {
       this.commentEvent.onUpdate();
 
@@ -32,6 +34,8 @@ class InAppNotificationService {
       }
     });
 
+    // remove
+
   }
 
   removeActivity = async function(activity) {