fix(Separator): Default props typo

src/Separator/Separator.js

@@ -19,7 +19,7 @@ export default class Separator extends Component {
    borderSize: PropTypes.oneOf(['x1', 'x2']),
  };

  static defualtProps = {
  static defaultProps = {
    borderColor: true,
    borderSize: 'x1',
  };