From 59d31195f1a57f09377926998aa18e3b0a6e9949 Mon Sep 17 00:00:00 2001
From: Yanyan Wang <yanyanwang93@gmail.com>
Date: Fri, 25 Nov 2022 14:59:54 +0800
Subject: [PATCH] docs: update error docs for downloadFullImage API (#4078)

---
 packages/site/docs/api/graphFunc/download.en.md | 2 +-
 packages/site/docs/api/graphFunc/download.zh.md | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/site/docs/api/graphFunc/download.en.md b/packages/site/docs/api/graphFunc/download.en.md
index 4c96332c93c..a1753b3e7c8 100644
--- a/packages/site/docs/api/graphFunc/download.en.md
+++ b/packages/site/docs/api/graphFunc/download.en.md
@@ -25,7 +25,7 @@ where the `imageConfig` is the configuration for exported image:
 **Usage**
 
 ```javascript
-graph.downloadFullImage('tree-graph', {
+graph.downloadFullImage('tree-graph', 'image/png', {
   backgroundColor: '#ddd',
   padding: [30, 15, 15, 15],
 });
diff --git a/packages/site/docs/api/graphFunc/download.zh.md b/packages/site/docs/api/graphFunc/download.zh.md
index ecba1a3d064..a395a2d6ece 100644
--- a/packages/site/docs/api/graphFunc/download.zh.md
+++ b/packages/site/docs/api/graphFunc/download.zh.md
@@ -25,7 +25,7 @@ order: 17
 **用法**
 
 ```javascript
-graph.downloadFullImage('tree-graph', {
+graph.downloadFullImage('tree-graph', 'image/png', {
   backgroundColor: '#ddd',
   padding: [30, 15, 15, 15],
 });