minor #14308 [2.7] For @link annotations (nicolas-grekas)

This PR was merged into the 2.7 branch.

Discussion
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[2.7] For @link annotations

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

It would be great if PHP CS Fixer could enforce this.

Commits
-------

07cb92f [2.7] For @link annotations

src/Symfony/Component/Form/Extension/Core/ChoiceList/ChoiceListInterface.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Form\Extension\Core\ChoiceList;
 
 use Symfony\Component\Form\ChoiceList\ChoiceListInterface as BaseChoiceListInterface;
+use Symfony\Component\Form\FormConfigBuilder;
 
 /**
  * Contains choices that can be selected in a form field.

src/Symfony/Component/Serializer/Mapping/Factory/ClassMetadataFactoryInterface.php

@@ -31,7 +31,7 @@ interface ClassMetadataFactoryInterface
      *
      * Otherwise, a new metadata instance is created. If the factory was
      * configured with a loader, the metadata is passed to the
-     * {@link LoaderInterface::loadClassMetadata()} method for further
+     * {@link \Symfony\Component\Serializer\Mapping\Loader\LoaderInterface::loadClassMetadata()} method for further
      * configuration. At last, the new object is returned.
      *
      * @param string|object $value