Fix blog image path

blog.html

@@ -6,9 +6,9 @@ parent: "Blog"
 
 {% for post in site.posts %}
     <a class="blog_box" href="{{ post.url }}">
-        <img src="assets/post_images/{{ post.image }}" alt="Post Image"/>
+        <img src="/assets/post_images/{{ post.image }}" alt="Post Image"/>
         <h2>{{ post.title }}</h2>
         <h3>{{ post.date | date_to_string }}</h3>
-        {{ post.excerpt }}
+        <p>{{ post.excerpt }}</p>
     </a>
 {% endfor %}