style: smaller outline headings

Author: carsakiller

src/layouts/WikiArticle.astro

@@ -246,6 +246,10 @@ export interface Props {
     width: var(--sidebar-width);
     z-index: 25;
 
+    h2 {
+      margin: 0.4em 0px 0.1em 0px;
+    }
+
     button.open,
     button.close {
       border: none;