bug #12742 Update parent_services.rst (amine-betari)

This PR was submitted for the 4.4 branch but it was merged into the 3.4 branch instead (closes #12742).

Discussion
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Update parent_services.rst

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Commits
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833ed5e Update parent_services.rst

Author: OskarStark

service_container/parent_services.rst

@@ -39,7 +39,7 @@ Your child service classes may look like this::
     // src/AppBundle/Repository/DoctrineUserRepository.php
     namespace AppBundle\Repository;
 
-    use AppBundle\Repository\BaseDoctrineRepository
+    use AppBundle\Repository\BaseDoctrineRepository;
 
     // ...
     class DoctrineUserRepository extends BaseDoctrineRepository
@@ -50,7 +50,7 @@ Your child service classes may look like this::
     // src/AppBundle/Repository/DoctrinePostRepository.php
     namespace AppBundle\Repository;
 
-    use AppBundle\Repository\BaseDoctrineRepository
+    use AppBundle\Repository\BaseDoctrineRepository;
 
     // ...
     class DoctrinePostRepository extends BaseDoctrineRepository