[Cards] Fix the cards docs image asset.
[Cards] Fix the cards docs image asset.

randallli/material-components-ios,randallli/material-components-ios,randallli/material-components-ios,randallli/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,randallli/material-components-ios,material-components/material-components-ios,randallli/material-components-ios,material-components/material-components-ios