Remove mysterious dot from EventTilePreviews

It was a bullet point, since EventTiles now get created as li by
default :P

Signed-off-by: Robin Townsend <robin@robin.town>

src/components/views/elements/EventTilePreview.tsx

@@ -128,6 +128,7 @@ export default class EventTilePreview extends React.Component<IProps, IState> {
                 mxEvent={event}
                 layout={this.props.layout}
                 enableFlair={SettingsStore.getValue(UIFeature.Flair)}
+                as="div"
             />
         </div>;
     }