docs: Have ReadTheDocs use dependency groups

Previously it was using extras.

Signed-off-by: Matt Wozniski <godlygeek@gmail.com>

Author: godlygeek

.readthedocs.yml

@@ -5,10 +5,10 @@ build:
     python: "3"
 python:
   install:
-    - method: pip
-      path: .
-      extra_requirements:
-        - docs
+    - method: uv
+      command: sync
+      groups:
+        - docsasdf
 sphinx:
   builder: html
   configuration: docs/conf.py