message: Fixed ContentCard example
diff: /*
  * iOS
  * */
  +.ContentCard--ios {
  + margin: 12px;
  +}
  +
  .ContentCard--ios .ContentCard__tappable {
  border-radius: 10px;
  }
  /*
  * Android and vkcom
  * */
  +.ContentCard--android,
  +.ContentCard--vkcom {
  + margin: 12px 16px;
  +}
  +
  .ContentCard--android .ContentCard__tappable,
  .ContentCard--vkcom .ContentCard__tappable {
  border-radius: 8px;
  