update qq qr-code, test=document_fix (#6626)

README_cn.md

@@ -16,6 +16,7 @@
 </p>
 </div>
 
+
 <div  align="center">
   <img src="docs/images/ppdet.gif" width="800"/>
 
@@ -72,7 +73,7 @@
 - 欢迎加入PaddleDetection QQ、微信用户群（添加并回复小助手“检测”）
 
   <div align="center">
-  <img src="https://user-images.githubusercontent.com/48054808/157800129-2f9a0b72-6bb8-4b10-8310-93ab1639253f.jpg"  width = "200" />  
+  <img src="https://user-images.githubusercontent.com/22989727/183843004-baebf75f-af7c-4a7c-8130-1497b9a3ec7e.png"  width = "200" />  
   <img src="https://user-images.githubusercontent.com/34162360/177678712-4655747d-4290-4ad9-b7a1-4564a5418ac6.jpg"  width = "200" />  
   </div>
 

README_en.md

@@ -75,8 +75,8 @@
   Welcome to join PaddleDetection user groups on QQ, WeChat (scan the QR code, add and reply "D" to the assistant)
 
   <div align="center">
-  <img src="https://user-images.githubusercontent.com/48054808/157800129-2f9a0b72-6bb8-4b10-8310-93ab1639253f.jpg"  width = "200" />  
-  <img src="https://user-images.githubusercontent.com/48054808/160531099-9811bbe6-cfbb-47d5-8bdb-c2b40684d7dd.png"  width = "200" />  
+  <img src="https://user-images.githubusercontent.com/22989727/183843004-baebf75f-af7c-4a7c-8130-1497b9a3ec7e.png"  width = "200" />  
+  <img src="https://user-images.githubusercontent.com/34162360/177678712-4655747d-4290-4ad9-b7a1-4564a5418ac6.jpg"  width = "200" />  
   </div>
 
 ## <img src="https://user-images.githubusercontent.com/48054808/157827140-03ffaff7-7d14-48b4-9440-c38986ea378c.png" width="20"/> Kit Structure