Fix OfflineMapTask instantiation pattern.

Author: yo1995

Shared/Samples/Generate offline map/GenerateOfflineMapView.swift

@@ -159,7 +159,7 @@ private extension GenerateOfflineMapView {
             do {
                 // Waits for the online map to load.
                 try await onlineMap.load()
-                offlineMapTask = OfflineMapTask(portalItem: napervillePortalItem)
+                offlineMapTask = OfflineMapTask(onlineMap: onlineMap)
                 isGenerateDisabled = false
             } catch {
                 self.error = error

Shared/Samples/Generate offline map/README.md

@@ -15,7 +15,7 @@ When the map loads, zoom to the extent you want to take offline. The red border
 ## How it works
 
 1. Create a `Map` instance with a `PortalItem`.
-2. Create an `OfflineMapTask` instance with a `PortalItem`.
+2. Create an `OfflineMapTask` instance with the online map.
 3. Create `GenerateOfflineMapParameters` parameters for the offline map task with `OfflineMapTask.makeDefaultGenerateOfflineMapParameters(areaOfInterest:)`.
 4. Create a `GenerateOfflineMapJob` with `OfflineMapTask.makeGenerateOfflineMapJob(parameters:downloadDirectory:)`, using the parameters and specifying a download directory URL.
 5. Start the job and await its output.