Microsoft Teams MessageCard (Connector card) doesn't display Images From Incoming Webhook

Question

I'm testing out the Message Card type with this webhook payload, but the Images won't show. Am I missing something?

Doc: https://learn.microsoft.com/en-us/microsoftteams/platform/task-modules-and-cards/cards/cards-reference#example-of-an-office-365-connector-card

Screenshot

{    
"title": "Images",   
"images": [    
    { "image":"http://connectorsdemo.azurewebsites.net/images/MicrosoftSurface_024_Cafe_OH-06315_VS_R1c.jpg" },    
    { "image":"http://connectorsdemo.azurewebsites.net/images/WIN12_Scene_01.jpg" },    
    { "image":"http://connectorsdemo.azurewebsites.net/images/WIN12_Anthony_02.jpg" }   
 ]   

}