update README.md.

README.md

@@ -128,8 +128,7 @@ https://ztktkv.yuque.com/books/share/b96f1fee-41d8-4da3-9e22-b73aeb1e29ed?# 《i
 
 微信群:
 
-![输入图片说明](doc/ma.png)![输入图片说明](doc/ma.png)
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+![输入图片说明](doc/ma.png)
 
 
 ### roadmap
@@ -139,3 +138,4 @@ https://ztktkv.yuque.com/books/share/b96f1fee-41d8-4da3-9e22-b73aeb1e29ed?# 《i
 ![输入图片说明](https://foruda.gitee.com/images/1659983071329152521/roadmap.png)
 
 
+