actually load lit.js with script[type=module]

Author: e111077

packages/lit-dev-content/site/_includes/default.html

@@ -24,7 +24,7 @@
       <script type="module" src="{{ site.baseurl }}/js/global/lit-hydrate-support.js"></script>
     {% else %}
       <!-- Loads lit-hydration since we manually chunk this -->
-      <script rel="module" href="{{ site.baseurl }}/js/lit.js"></script>
+      <script type="module" href="{{ site.baseurl }}/js/lit.js"></script>
     {% endif %}
     {% inlinejs "global/dsd-polyfill.js" %}