Add extra top margin above search results

Author: parlough

sites/docs/lib/_sass/pages/_search.scss

@@ -37,6 +37,7 @@
     border: none;
     border-radius: var(--site-radius);
     padding-top: 0.5rem;
+    margin-top: 0.5rem;
 
     .gsc-completion-selected {
       background-color: var(--site-primary-color-highlight);