fix sphinx

Author: patapenka-alexey

.readthedocs.yaml

@@ -13,3 +13,11 @@ python:
     - method: pip
       path: .
     - requirements: docs/requirements.txt
+
+sphinx:
+  # Path to your Sphinx configuration file.
+  configuration: docs/conf.py
+
+# mkdocs:
+#   # Path to your MkDocs configuration file.
+#   configuration: mkdocs.yml