update

README.md

@@ -154,8 +154,8 @@ func main() {
 
 QQ群：
 <img width="226" height="300" src="https://raw.githubusercontent.com/iGoogle-ink/gopay/master/qq_gopay.png"/>
-微信：
-<img width="226" height="300" src="https://raw.githubusercontent.com/iGoogle-ink/gopay/master/wechat_jerry.png"/>
+微信群：
+<img width="226" height="300" src="https://raw.githubusercontent.com/iGoogle-ink/gopay/master/wechat_gopay.png"/>
 
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