user docs: Add *Settings* macro to *Configure desktop notifications* doc.

templates/zerver/help/configure-desktop-notifications.md

@@ -1,23 +1,18 @@
 # Configure desktop notifications
-To change your desktop notification settings, click on the cog
-(![cog](/static/images/help/cog.png)) in the top right corner.
-Click on **Settings** in the menu that pops up.
 
-![Settings](/static/images/help/cog_dropdown_settings.png)
+Follow the following steps to change your desktop notifications.
 
-You will first see the **Your Account** section.
-Scroll down to the **Notifications** section.
+{!settings1.md!} [Notifications](/#settings/notifications)
+{!settings2.md!}
 
-![Notification Settings](/static/images/help/notification-settings.png)
-
-If you want notifications for each new message from a stream, check the
+    If you want notifications for each new message from a stream, check the
 desktop notifications box under **Stream messages**.
 
-![Stream notifications](/static/images/help/stream-notification-settings.png)
+    ![Stream notifications](/static/images/help/stream-notification-settings.png)
 
-If you want notifications for private messages and @-mentions, check the
+    If you want notifications for private messages and @-mentions, check the
 desktop notifications box under **Private messages and @-mentions**.
 
-![PM notifications](/static/images/help/pm-notification-settings.png)
+    ![PM notifications](/static/images/help/pm-notification-settings.png)
 
-Click on the **Save Changes** button at the bottom to save your settings.
+2. Click on the **Save Changes** button at the bottom to save your settings.