docs: prefer shorter demo

src/address-list/README.md

@@ -57,12 +57,8 @@ export default {
       },
     ];
 
-    const onAdd = () => {
-      Toast('Add');
-    };
-    const onEdit = (item, index) => {
-      Toast('Edit:' + index);
-    };
+    const onAdd = () => Toast('Add');
+    const onEdit = (item, index) => Toast('Edit:' + index);
 
     return {
       list,

src/address-list/README.zh-CN.md

@@ -61,12 +61,8 @@ export default {
       },
     ];
 
-    const onAdd = () => {
-      Toast('新增地址');
-    };
-    const onEdit = (item, index) => {
-      Toast('编辑地址:' + index);
-    };
+    const onAdd = () => Toast('新增地址');
+    const onEdit = (item, index) => Toast('编辑地址:' + index);
 
     return {
       list,