be consistent ´with the following code example

OskarStark · OskarStark · commit 443e069bbb6a · 2019-04-03T21:35:41.000+02:00
diff --git a/form/form_collections.rst b/form/form_collections.rst
@@ -516,6 +516,7 @@ you will learn about next!).
 
         // src/AppBundle/Entity/Task.php
 
+        // ...
         public function addTag(Tag $tag)
         {
             // for a many-to-many association:

Original file line number	Diff line number	Diff line change
`@@ -516,6 +516,7 @@ you will learn about next!).`
`516`	`516`
`517`	`517`	`// src/AppBundle/Entity/Task.php`
`518`	`518`
	`519`	`+ // ...`
`519`	`520`	`public function addTag(Tag $tag)`
`520`	`521`	`{`
`521`	`522`	`// for a many-to-many association:`