feat: add some margin-top to the footer

Author: erral

frontend/theme/extras/site/components/layout/footer.less

@@ -1,6 +1,6 @@
 #footer {
   padding: 2rem 0 0 0;
-  margin: 1rem 0 0 0;
+  margin: 10rem 0 0 0;
   background-color: @footerLightGrey;
   box-shadow: 0px 5px 7px 5px rgba(119, 119, 119, 0.1);
   font-family: @headerFontName;