message: fix(readme): update prop description typo
diff: @@ -77,7 +77,7 @@ export default () => (
  | animation | dropdown animation name. only support slide-up now | String | '' |
  | transitionName | dropdown css animation name | String | '' |
  | choiceTransitionName | css animation name for selected items at multiple mode | String | '' |
  -| dropdownMatchSelectWidth | whether dropdown's with is same with select | bool | true |
  +| dropdownMatchSelectWidth | whether dropdown's width is same with select | bool | true |
  | dropdownClassName | additional className applied to dropdown | String | - |
  | dropdownStyle | additional style applied to dropdown | Object | {} |
  | dropdownAlign | additional align applied to dropdown | Object | {} |
  