Merge branch 'patch-4' into 'master'

Fix formatting issue in fe_guide/vue.md.

See merge request !1894

doc/development/fe_guide/vue.md

@@ -424,6 +424,7 @@ the response we need:
 ```
 
 1. Use `$.mount()` to mount the component
+
 ```javascript
   // bad
   new Component({