Update readthedocs config

.readthedocs.yml

@@ -1,5 +1,22 @@
+# .readthedocs.yml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the OS, Python version and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "mambaforge-22.9"
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+
+# Optionally build your docs in additional formats such as PDF and ePub
+formats: all
+
 conda:
-   file: docs/environment.yml
-requirements_file: requirements.txt
-python:
-  setup_py_install: true
+    environment: docs/environment.yml