fix documentaion error #16

Author: Binaryify

docs/README.md

@@ -117,7 +117,7 @@ export default {
 
 如果此选项为 true，则当滚动到达边的末尾时，mousewheel 事件将传播到父元素。
 
-**Default**: `false`
+**Default**: `true`
 
 ### `swipeEasing {Boolean}`
 

docs/en/README.md

@@ -122,7 +122,7 @@ The scroll speed applied to mousewheel event.
 If this option is true, when the scroll reaches the end of the side, mousewheel
 event will be propagated to parent element.
 
-**Default**: `false`
+**Default**: `true`
 
 ### `swipeEasing {Boolean}`