email: fix reference to CFG_SITE_ADMIN_EMAIL
email: fix reference to CFG_SITE_ADMIN_EMAIL

* FIX Fixes reference to CFG_SITE_ADMIN_EMAIL (not a global).

Signed-off-by: Dan Michael O. Heggø <aaea6e4e41b7ee5e29f60a7baad5e79159a19706@gmail.com>

inveniosoftware/invenio,inveniosoftware/invenio,tiborsimko/invenio,tiborsimko/invenio