https://bugs.gentoo.org/889706
https://github.com/getpelican/pelican/commit/33aca76d78601f0f0da635c8a14c89bbbc9ff8d6

From 33aca76d78601f0f0da635c8a14c89bbbc9ff8d6 Mon Sep 17 00:00:00 2001
From: Justin Mayer <entroP@gmail.com>
Date: Mon, 1 Aug 2022 12:36:54 +0200
Subject: [PATCH] Adjust extlinks configuration for Sphinx 5.0+

--- a/docs/conf.py
+++ b/docs/conf.py
@@ -23,7 +23,7 @@
 '''.format(last_stable)
 
 extlinks = {
-    'pelican-doc':  ('https://docs.getpelican.com/%s/', '')
+    'pelican-doc':  ('https://docs.getpelican.com/%s/', '%s')
 }
 
 # -- Options for HTML output --------------------------------------------------