Return Camera Image (Stream) from ICameraView.CaptureImage() (#559)

* Update email-validation-behavior.md

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* Update camera-view.md

---------

Co-authored-by: Brandon Minnick <13558917+brminnick@users.noreply.github.com>
Co-authored-by: Gerald Versluis <gerald@verslu.is>
Co-authored-by: Gerald Versluis <gerald.versluis@microsoft.com>

Author: TheCodeTraveler

docs/maui/views/camera-view.md

@@ -408,29 +408,17 @@ The following example demonstrates how to use the `CaptureImage` method:
 ```cs
 async void HandleCaptureButtonTapped(object? sender, EventArgs e)
 {
-    // Use the Camera field defined above in XAML (`<toolkit:CameraView x:Name="Camera" />`)
-    Camera.MediaCaptured += HandleCameraViewMediaCaptured;
-
     try
     {
+        // Use the Camera field defined above in XAML (`<toolkit:CameraView x:Name="Camera" />`)
         var captureImageCTS = new CancellationTokenSource(TimeSpan.FromSeconds(3));
-        await Camera.CaptureImage(captureImageCTS.Token);
+        Stream stream = await Camera.CaptureImage(captureImageCTS.Token);
     }
     catch(Exception e)
     {
         // Handle Exception
         Trace.WriteLine(e);
     }
-    finally
-    {
-        Camera.MediaCaptured -= HandleCameraViewMediaCaptured;
-    }
-}
-
-void HandleCameraViewMediaCaptured(object? sender, MediaCapturedEventArgs e)
-{
-    Stream stream = e.Media;
-    // process media
 }
 ```