chore: more consistent slugging

src/_includes/partials/home/posts.liquid

@@ -14,7 +14,7 @@
         {{ post.date | date: "%B %e, %Y" }}
       </time>
     </div>
-    <a href="{{ post.url }}">
+    <a href="{{ post.slug }}">
       <h2 class="flex-centered">{{ post.title }}</h2>
     </a>
     <span class="p-author h-card hidden">{{ meta.siteName }}</span>

src/_includes/partials/widgets/popular-posts.liquid

@@ -7,7 +7,7 @@
 <ul class="link-list">
   {% for post in postData limit: 5 %}
     <li>
-      <a class="no-underline" href="{{ post.url }}" title="{{ post.title | escape}}">
+      <a class="no-underline" href="{{ post.slug }}" title="{{ post.title | escape}}">
         {{ post.title }}
       </a>
     </li>