Docs: remove showLength which is not exits in common props

Author: zhuanghongji

docs/props.md

@@ -27,7 +27,6 @@
 | windowSize              | ❌                        | 0                                                                                                     | number                                                                                                                   | The maximum number of items that can respond to pan gesture events, `0` means all items will respond to pan gesture events     |
 | onProgressChange        | ❌                        |                                                                                                       | onProgressChange?: (offsetProgress: number,absoluteProgress: number) => void                                             | On progress change. `offsetProgress`:Total of offset distance (0 390 780 ...); `absoluteProgress`:Convert to index (0 1 2 ...) |
 | modeConfig              | ❌                        | { snapDirection: 'left',moveSize: window.width,stackInterval: 30,scaleInterval: 0.08,rotateZDeg: 135} | {moveSize?: number;stackInterval?: number;scaleInterval?: number;rotateZDeg?: number;snapDirection?: 'left' \| 'right';} | Stack layout animation style                                                                                                   |
-| showLength              | ❌                        | data.length - 1                                                                                       | number                                                                                                                   | The maximum number of items will show in stack                                                                                 |
 | pagingEnabled           | ❌                        | true                                                                                                  | boolean                                                                                                                  | When true, the scroll view stops on multiples of the scroll view's size when scrolling                                         |
 | overscrollEnabled       | ❌                        | true                                                                                                  | boolean                                                                                                                  | If enabled, the item will scroll to the first placement when scrolling past the edge rather than closing to the last. (previous conditions: loop=false)                                         |
 | snapEnabled             | ❌                        | true                                                                                                  | boolean                                                                                                                  | If enabled, releasing the touch will scroll to the nearest item, valid when pagingEnabled=false                                |