Fix readthedocs build

.readthedocs.yml

@@ -8,22 +8,22 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.10"
+    python: "mambaforge-22.9"
     # You can also specify other tool versions:
     # nodejs: "20"
     # rust: "1.70"
     # golang: "1.20"
 
+conda:
+  environment: docs/environment.yml
+
 sphinx:
   configuration: docs/conf.py
   # You can configure Sphinx to use a different builder, for instance use the dirhtml builder for simpler URLs
   # builder: "dirhtml"
   # Fail on all warnings to avoid broken references
   # fail_on_warning: true
 
-conda:
-  environment: docs/environment.yml
-
 # Optionally build your docs in additional formats such as PDF and ePub
 # formats:
 #   - pdf