chore: cleanup JS example; change posts to not use small

src/js/script.js

@@ -1,3 +1,3 @@
-;(function(w, d) {
-  console.log('Hello, world!', w, d)
-})(window, document);
+;(function() {
+  console.log('Hello, world!');
+})();

src/templates/post.html

@@ -5,10 +5,7 @@
         <a href=".$url$">$title$</a>
       </h1>
       <div>
-        <small>$date$</small>
-        $if(updated)$
-        <small>(updated: $updated$)</small>
-        $endif$
+        $date$ $if(updated)$(updated: $updated$)$endif$
       </div>
     </header>
     <section>