[Doc] update click event params

src/icon/README.md

@@ -72,4 +72,4 @@ import 'vant/lib/icon/local.css';
 
 | Event | Description | Arguments |
 |------|------|------|
-| click | Triggered when click icon | - |
+| click | Triggered when click icon | event: Event |

src/icon/README.zh-CN.md

@@ -74,4 +74,4 @@ import 'vant/lib/icon/local.css';
 
 | 事件名 | 说明 | 回调参数 |
 |------|------|------|
-| click | 点击图标时触发 | - |
+| click | 点击图标时触发 | event: Event |

src/icon/index.tsx

@@ -53,8 +53,8 @@ function Icon(
 Icon.props = {
   name: String,
   size: [Number, String],
-  color: String,
   info: [Number, String],
+  color: String,
   tag: {
     type: String,
     default: 'i'