docs: document resize callback sizes

Author: nrps9909

README.md

@@ -85,7 +85,7 @@ Then open `http://localhost:8000`.
 | placement              | `left` \| `right` \| `top` \| `bottom`                                                                   | `right`              | Drawer placement.                                                               |
 | prefixCls              | string                                                                                                   | `rc-drawer`          | Class name prefix.                                                              |
 | push                   | boolean \| `{ distance?: number \| string }`                                                             | -                    | Push parent drawers when nested.                                                |
-| resizable              | boolean \| `{ onResize?: (size: number) => void; onResizeStart?: () => void; onResizeEnd?: () => void }` | false                | Enable resizing and optional resize callbacks.                                  |
+| resizable              | boolean \| `{ onResize?: (size: number) => void; onResizeStart?: (size: number) => void; onResizeEnd?: (size: number) => void }` | false                | Enable resizing and optional resize callbacks.                                  |
 | rootClassName          | string                                                                                                   | -                    | Class name for the root wrapper.                                                |
 | rootStyle              | CSSProperties                                                                                            | -                    | Style for the root wrapper.                                                     |
 | size                   | number \| string                                                                                         | `378` for left/right | Drawer size. Controls width for left/right and height for top/bottom placement. |