Update cms/templates/widgets/footer.html
Update cms/templates/widgets/footer.html

deleted data-rel property

Co-authored-by: Moisés González <7fc6abed4a61741812fb552bf681eb019f0f16d4@edunext.co>
eduNEXT/edunext-platform,eduNEXT/edunext-platform,eduNEXT/edunext-platform,eduNEXT/edunext-platform