Added an extra space to the readthedocs theme breadcrumbs (#2810)

Co-authored-by: Oleh Prypin <oleh@pryp.in>

mkdocs/themes/readthedocs/breadcrumbs.html

@@ -9,8 +9,8 @@
           <li>{{ doc.title }} &raquo;</li>
         {%- endif %}
       {%- endfor %}
+      <li>{{ page.title }}</li>
     {%- endif %}
-    {%- if page %}<li>{{ page.title }}</li>{%- endif %}
     <li class="wy-breadcrumbs-aside">
       {%- block repo %}
       {%- if page and page.edit_url %}
@@ -39,4 +39,3 @@
   {%- endif %}
   <hr/>
 </div>
-