Fix of a bug in the pagination section (#8890)

Merge pull request 8890

docs/_docs/pagination.md

@@ -155,7 +155,7 @@ page with links to all but the current page.
     {% if page == paginator.page %}
       <em>{{ page }}</em>
     {% elsif page == 1 %}
-      <a href="{{ '/' | relative_url }}">{{ page }}</a>
+      <a href="{{ site.paginate_path | relative_url | replace: 'page:num/', '' }}">{{ page }}</a>
     {% else %}
       <a href="{{ site.paginate_path | relative_url | replace: ':num', page }}">{{ page }}</a>
     {% endif %}