Update DOCtor-RST config

Author: javiereguiluz

.doctor-rst.yaml

@@ -99,6 +99,7 @@ whitelist:
         - 'The bin/console Command'
         - '.. _`LDAP injection`: http://projects.webappsec.org/w/page/13246947/LDAP%20Injection'
         - '.. versionadded:: 2.7.2' # Doctrine
+        - '.. versionadded:: 2.8.0' # Doctrine
         - '.. versionadded:: 1.9.0' # Encore
         - '.. versionadded:: 1.18' # Flex in setup/upgrade_minor.rst
         - '.. versionadded:: 1.0.0' # Encore