fix indentation for unordered lists (+ consistency changes)

docs/css/camp2023-style.css

@@ -9,3 +9,8 @@
 .wy-nav-top {
     background: #343131;
 }
+
+.rst-content .section ul li > ul {
+    margin-bottom: 0;
+    margin-top: 0;
+}