fix alshedivat#814 (alshedivat#818)

Author: rohandebsarkar

_includes/projects_horizontal.html

@@ -8,10 +8,7 @@
       <div class="row g-0">
         {%- if project.img -%}
         <div class="card-img col-md-6">
-          {% responsive_image_block %}
-            path: {{ project.img }}
-            alt: "project thumbnail"
-          {% endresponsive_image_block %}
+          {% include figure.html path=project.img alt="project thumbnail" %}
         </div>
         <div class="col-md-6">
         {%- else -%}