Update 269.组件注册与画布渲染.md

修复代码示例错误

可视化搭建/269.组件注册与画布渲染.md

@@ -224,7 +224,7 @@ const divMeta = {
   componentName: "div",
   runtimeProps: () => ({
     onClick: () => { console.log('click') }
-  })
+  }),
   element: ({ onClick }) => (
     <button onClick={onClick}>
       点击我