task-oriented chat: change wording on push notifications

Author: vladvelici

src/pages/docs/guides/chat/build-task-oriented.mdx

@@ -379,9 +379,7 @@ const realtimeClient = new Ably.Realtime({
 
 ## Push notifications
 
-Ably Pub/Sub channels can be used for push notifications. See the [Push notifications](/docs/push/publish) documentation for more details. Since Ably Chat rooms are backed by a single Ably Pub/Sub channel, you can use the same channel for push notifications to notify all participants in the room when something happens.
-
-You can also use a separate channel to control notifications, in which case you can tailor them to individual users. Read more about push notifications with Ably in the [Push notifications](/docs/push/publish) documentation.
+With Ably you can send push notifications to a channel, to a device, or to a user by their `clientId`. This allows you to build task-oriented push notifications that are tailored to the specific needs of your application. Since Ably Chat rooms are backed by a single Ably Pub/Sub channel, you can use the same channel for push notifications to notify all participants in the room when something happens. Read more about push notifications with Ably in the [Push notifications](/docs/push/publish) documentation.
 
 ## Production-ready checklist