Dav: add some documentation on classes

src/Bundle/ChillDocStoreBundle/Security/Guard/JWTOnDavUrlAuthenticator.php

@@ -18,6 +18,9 @@ use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInt
 use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 use Symfony\Contracts\Translation\TranslatorInterface;
 
+/**
+ * Alter the base JWTTokenAuthenticator to add the special extractor for dav url endpoints.
+ */
 class JWTOnDavUrlAuthenticator extends JWTTokenAuthenticator
 {
     public function __construct(