fix readthedoc config

.readthedocs.yml → .readthedocs.yaml

@@ -6,14 +6,17 @@
 version: 2
 
 # Add some extra build dependencies (graphviz for plotting)
+# Set the version of Python and other tools you might need
 build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.10"
   apt_packages:
     - graphviz
     - graphviz-dev
 
 # Make sure that dependencies are installed with pip instead of setup.py
 python:
-  version: 3.10
   install:
     - requirements: docs/preinstall_requirements.txt
     - requirements: docs/requirements.txt