message: Show API server URL in about dialog
diff: @@ -43,6 +43,8 @@ const AboutModalItems: React.FC<AboutModalItemsProps> = ({cv}) => {
  <TextListItem component="dd">{clusterID}</TextListItem>
  </React.Fragment>
  )}
  + <TextListItem component="dt">API Server</TextListItem>
  + <TextListItem component="dd">{window.SERVER_FLAGS.kubeAPIServerURL}</TextListItem>
  </TextList>
  </TextContent>
  );
  