Use absolute url for link to release archive

Why:
To include the site url and base url, enabling this to work on a fork
where the baseurl is not empty.

Signed-off-by: Robert Young <[email protected]>

Author: robobario

_layouts/released-documentation.html

@@ -30,7 +30,7 @@ <h1 id="page-title" class="fs-3">{{ version }} Documentation</h1>
           </div>
 {%- endif -%}
 </p>
-<p>See the <a href="/release-archives/">release archives</a> for the documentation of other releases.</p>
+<p>See the <a href="{{ '/release-archives/' | absolute_url }}">release archives</a> for the documentation of other releases.</p>
       </div>
     </div>
   </div>