change docs poetry install

.readthedocs.yaml

@@ -21,7 +21,7 @@ build:
     post_install:
       # Install dependencies with 'docs' dependency group
       # https://python-poetry.org/docs/managing-dependencies/#dependency-groups
-      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install --with docs
+      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install
 
 # Build documentation in the "docs/" directory with Sphinx
 sphinx: