Remove empty p tags from liquid tag

index.md

@@ -6,7 +6,7 @@ layout: layout.liquid
 # Posts
 
 <ul class="post-list">
-{%- for post in collections.post reversed %}
+{%- for post in collections.post reversed -%}
     <li>
         <a href="{{ post.url }}">{{ post.data.title }}</a>
         <time>{{ post.data.date | date: "%Y-%m-%d"}}</time>