Simplify docs conf

Signed-off-by: Bernát Gábor <gaborjbernat@gmail.com>

Author: gaborbernat

.readthedocs.yaml

@@ -0,0 +1,15 @@
+version: 2
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3"
+python:
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs
+sphinx:
+  builder: html
+  configuration: docs/conf.py
+  fail_on_warning: true