update rtd config

Author: cehbrecht

.readthedocs.yml

@@ -1,30 +1,27 @@
 # .readthedocs.yaml
 # Read the Docs configuration file
-# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+# See: https://docs.readthedocs.io/en/stable/config-file/v2.html
 
-# Required
-version: 2
+version: 2  # Required
 
-# Make additional formats available for download
+# Documentation formats to build and make available
 formats:
   - pdf
   - epub
 
-# Set the version of Python and other tools you might need
 build:
   os: ubuntu-22.04
   tools:
-    python: "mambaforge-22.9"
+    python: "3.11"  # Use standard CPython version; `mambaforge-22.9` is not valid here
 
-# Build documentation in the docs/ directory with Sphinx
-sphinx:
-  configuration: docs/conf.py
-
-# We recommend specifying your dependencies to enable reproducible builds:
-# https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
+# Python-related configuration
 python:
   install:
     - method: pip
       path: .
       extra_requirements:
-        - dev
+        - dev
+
+# Sphinx configuration
+sphinx:
+  configuration: docs/conf.py