docs: fix typos

Shimada666 · Shimada666 · commit 702816be05f2 · 2023-04-27T23:33:20.000+08:00
diff --git a/README.md b/README.md
@@ -69,7 +69,7 @@ app
   .mount('#app')
 ```
 
-然后
+then
 
 ```vue
 

-Original file line number
+Diff line change
   .mount('#app')
 ```
 -然后
 +then
 ```vue