minor #3556 Fix PSR error (ifdattic)

This PR was merged into the 2.3 branch.

Discussion
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Fix PSR error

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.3
| Fixed tickets |

Fixes: Opening parenthesis of a multi-line function call must be the last content on the line

Commits
-------

31a0b07 Fix PSR error

Author: weaverryan

book/doctrine.rst

@@ -1253,8 +1253,8 @@ following method to the ``ProductRepository`` class::
     public function findOneByIdJoinedToCategory($id)
     {
         $query = $this->getEntityManager()
-            ->createQuery('
-                SELECT p, c FROM AcmeStoreBundle:Product p
+            ->createQuery(
+                'SELECT p, c FROM AcmeStoreBundle:Product p
                 JOIN p.category c
                 WHERE p.id = :id'
             )->setParameter('id', $id);