Update .readthedocs.yaml

Author: MrClock8163

.readthedocs.yaml

@@ -6,6 +6,8 @@ build:
     python: "3.12"
   jobs:
     pre_build:
+      - python -m pip install --upgrade pip
+      - python -m pip install --group documentation
       - python -m pip install .
 
 sphinx:
@@ -14,8 +16,3 @@ sphinx:
 
 formats:
   - pdf
-
-python:
-  install:
-    - requirements: docs/requirements.txt
-