update RTD

Author: chrizzFTD

.readthedocs.yml

@@ -1,5 +1,12 @@
+version: 2  # required for PY39+
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.12"
+
 python:
-  version: 3.8
-  pip_install: true
-  extra_requirements:
-    - docs
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs