use explicit language for docs

RonnyPfannschmidt · RonnyPfannschmidt · commit c36670190922 · 2022-09-28T09:25:38.000+02:00
diff --git a/docs/conf.py b/docs/conf.py
@@ -33,7 +33,7 @@
 version = ".".join(release.split(".")[:2])
 
 
-language = None
+language = "en"
 
 pygments_style = "sphinx"
 # html_logo = "_static/img/plug.png"
