Merge pull request #7559 from doctrine/malarzm-patch-1

Change Stackoverflow tag to doctrine-orm

docs/en/index.rst

@@ -15,7 +15,7 @@ Doctrine ORM don't panic. You can get help from different sources:
 -  Slack chat room `#orm <https://www.doctrine-project.org/slack>`_
 -  Report a bug on `GitHub <https://github.com/doctrine/orm/issues>`_.
 -  On `Twitter <https://twitter.com/search/%23doctrine2>`_ with ``#doctrine2``
--  On `StackOverflow <https://stackoverflow.com/questions/tagged/doctrine2>`_
+-  On `StackOverflow <https://stackoverflow.com/questions/tagged/doctrine-orm>`_
 
 Getting Started
 ---------------