Devops: Add explicit sphinx.configuration key to RTD conf

sphuber · web-flow · commit 189df631759e · 2025-01-10T22:01:52.000+01:00
See https://about.readthedocs.com/blog/2024/12/deprecate-config-files-without-sphinx-or-mkdocs-config/
diff --git a/.readthedocs.yml b/.readthedocs.yml
@@ -14,4 +14,5 @@ python:
 
 sphinx:
   builder: html
+  configuration: docs/source/conf.py
   fail_on_warning: true
