From c16c42b5f55dacdddc22109ef99f804ab71c2b00 Mon Sep 17 00:00:00 2001
From: redhoodsu <redhoodsu@tencent.com>
Date: Wed, 17 Jul 2019 10:55:18 +0800
Subject: [PATCH] Fix doc

---
 doc/API.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/API.md b/doc/API.md
index de904ee..00628a9 100644
--- a/doc/API.md
+++ b/doc/API.md
@@ -69,9 +69,9 @@ console.log('eruda');
 Add tool.
 
 ```javascript
-eruda.add(eruda.Tool.extend({
+eruda.add(new (eruda.Tool.extend({
     name: 'test'
-}));
+})));
 ```
 
 ## remove