Change remaining schema.org markup to https (#1978)

_includes/author-profile.html

@@ -1,7 +1,7 @@
 {% assign author = page.author | default: page.authors[0] | default: site.author %}
 {% assign author = site.data.authors[author] | default: author %}
 
-<div itemscope itemtype="http://schema.org/Person">
+<div itemscope itemtype="https://schema.org/Person">
 
   {% if author.avatar %}
     <div class="author__avatar">
@@ -43,7 +43,7 @@
     <button class="btn btn--inverse">{{ site.data.ui-text[site.locale].follow_label | remove: ":" | default: "Follow" }}</button>
     <ul class="author__urls social-icons">
       {% if author.location %}
-        <li itemprop="homeLocation" itemscope itemtype="http://schema.org/Place">
+        <li itemprop="homeLocation" itemscope itemtype="https://schema.org/Place">
           <i class="fas fa-fw fa-map-marker-alt" aria-hidden="true"></i> <span itemprop="name">{{ author.location }}</span>
         </li>
       {% endif %}