Finally fixing the feed and seo integration

Author: aklef

_layouts/default.html

@@ -28,15 +28,15 @@
 
     <title>{{ page-title }}</title>
 
-    {% if site.gems contains "jekyll-seo-tag" %}
+    {% if site.plugins contains "jekyll-seo-tag" %}
     <!-- jekyll-seo-tag -->
     {% else %}
     {% include social-metatags.html %}
     {% endif %}
 
     <link rel="canonical" href="{{ page.url | replace:'index.html','' | absolute_url }}">
 
-    {% if site.gems contains "jekyll-feed" %}
+    {% if site.plugins contains "jekyll-feed" %}
     <link rel="alternate" type="application/rss+xml" title="{{ site.title | escape }}" href="{{ "/feed.xml" | absolute_url }}">
     {% endif %}
 
@@ -112,7 +112,7 @@ <h2 class="project-date">
                 </span>
 
                 <!-- RSS icon -->
-                {% if site.gems contains "jekyll-feed" %}
+                {% if site.plugins contains "jekyll-feed" %}
                 <span class="my-span-icon">
                     <a href="{{ "/feed.xml" | absolute_url }}" aria-label="RSS feed" title="{{ site.github.owner_name }}'s RSS feed">
                         <svg class="my-svg-icon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M12 0c-6.627 0-12 5.373-12 12s5.373 12 12 12 12-5.373 12-12-5.373-12-12-12zm-3.374 17c-.897 0-1.626-.727-1.626-1.624s.729-1.624 1.626-1.624 1.626.727 1.626 1.624-.729 1.624-1.626 1.624zm3.885 0c-.03-3.022-2.485-5.474-5.511-5.504v-2.406c4.361.03 7.889 3.555 7.92 7.91h-2.409zm4.081 0c-.016-5.297-4.303-9.571-9.592-9.594v-2.406c6.623.023 11.985 5.384 12 12h-2.408z"/></svg>