refactor(page intro): increased margin above page intro

affects: @buildit/gravity-ui-web

Author: dw-buildit

packages/gravity-ui-web/src/sass/05-components/03-organisms/00-page-structure/_02-page-intro.scss

@@ -1,5 +1,6 @@
 .grav-c-page-intro {
   $grav-c-page-intro-notch-size: var(--grav-fs-plus-4);
+  margin-top: 2 * $grav-sp-vertical-gap;
 
   > * {
     display: block;