fix warning, patch from mmistakes

Author: staeiou

_layouts/archive.html

@@ -2,7 +2,7 @@
 layout: default
 ---
 
-{% if (page.header.overlay_color or page.header.overlay_image) or page.header.image %}
+{% if page.header.overlay_color or page.header.overlay_image or page.header.image %}
   {% include page__hero.html %}
 {% endif %}
 
@@ -21,4 +21,4 @@ <h1 class="page__title">{{ page.title }}</h1>
     {% endunless %}
     {{ content }}
   </div>
-</div>
+</div>