Update footer.html

_includes/footer.html

@@ -8,7 +8,7 @@
                {{ site.copyright }}
              {% else %}
              {% endif %}
-             {% for item in site.navigation_socials %}
+             {% for item in site.navigation_social %}
              <a href="{{item.link}}">{{item.title}}</a>
              {% endfor %}
              | {% github_edit_link "Edit" %}