rtd: modern config

Signed-off-by: Simon Deziel <[email protected]>

.readthedocs.yml

@@ -1,25 +1,20 @@
-# .readthedocs.yml
-# Read the Docs configuration file
-# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
-
-# Required
 version: 2
 
-# Use the latest image - see https://github.com/readthedocs/readthedocs-docker-images
 build:
-  image: latest
+  os: ubuntu-22.04
+  tools:
+    python: "3"
 
 sphinx:
-   configuration: doc/source/conf.py
+  configuration: docs/source/conf.py
 
 formats:
-   - pdf
-   - epub
+  - pdf
+  - epub
 
 python:
-   version: 3.7
-   install:
-   - method: pip
-     path: .
-     extra_requirements:
-       - docs
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs