fix: update tag lists to use cluster layout

src/_layouts/post.html

@@ -7,7 +7,7 @@ layout: base
         {% from "macros/date.njk" import format %}
         {{ format(date) }}
         <h1>{{ title }}</h1>
-        <ul class="[ categories ] [ flex gap-1 list-none p-0 ]">
+        <ul class="[ categories ] [ cluster list-none p-0 ]">
             {% for tag in tags | filter(["post"]) %}
                 <li>
                     <a class="[ flex ]" href="/tags/{{ tag | slugify }}">{{ tag }}</a>