Revert "Is this all that is needed?"

This reverts commit 28f1e7b.

_includes/toc.html

@@ -77,7 +77,7 @@
     {% assign maxHeader = include.h_max | default: 6 %}
     {% assign nodes = include.html | strip | split: '<h' %}
 
-    {% assign firstHeader = false %}
+    {% assign firstHeader = true %}
     {% assign currLevel = 0 %}
     {% assign lastLevel = 0 %}