fix: correctly URL encode share links

Relates to cotes2020#496

_includes/post-sharing.html

@@ -6,10 +6,11 @@
   <span class="share-label text-muted mr-1">{{ site.data.locales[lang].post.share }}</span>
   <span class="share-icons">
     {% capture title %}{{ page.title }} - {{ site.title }}{% endcapture %}
-    {% assign url = page.url | absolute_url %}
+    {% assign title = title | url_encode %}
+    {% assign url = page.url | absolute_url | url_encode %}
 
     {% for share in site.data.share.platforms %}
-      {% assign link = share.link | replace: 'TITLE', title | replace: 'URL', url | escape %}
+      {% assign link = share.link | replace: 'TITLE', title | replace: 'URL', url %}
         <a href="{{ link }}" data-toggle="tooltip" data-placement="top"
           title="{{ share.type }}" target="_blank" rel="noopener" aria-label="{{ share.type }}">
           <i class="fa-fw {{ share.icon }}"></i>