tweaking rtd config

.readthedocs.yaml

@@ -9,11 +9,11 @@ version: 2
 build:
   os: ubuntu-20.04
   tools:
-    python: "3.10"
-    # You can also specify other tool versions:
-    # nodejs: "16"
-    # rust: "1.55"
-    # golang: "1.17"
+    python: "3.13"
+  jobs:
+    install: 
+      - pip install --upgrade pip
+      - pip install --group 'doc'
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
@@ -28,5 +28,3 @@ python:
   install:
     - method: pip
       path: .
-      extra_requirements:
-        - doc