[DOP-28270] fix readthedocs yaml file

Author: TiGrib

.readthedocs.yaml

@@ -13,10 +13,10 @@ build:
       - git fetch --unshallow || true
     post_create_environment:
       - UV_PROJECT_ENVIRONMENT=$READTHEDOCS_VIRTUALENV_PATH python -m pip install uv
-      - UV_PROJECT_ENVIRONMENT=$READTHEDOCS_VIRTUALENV_PATH uv pip install --no-deps sphinx-plantuml # remove after https://github.com/zqmillet/sphinx-plantuml/pull/4
 
     post_install:
       - UV_PROJECT_ENVIRONMENT=$READTHEDOCS_VIRTUALENV_PATH uv sync --no-install-project --extra server --extra consumer --extra postgres --extra seed --group docs
+      - UV_PROJECT_ENVIRONMENT=$READTHEDOCS_VIRTUALENV_PATH uv pip install --no-deps sphinx-plantuml # remove after https://github.com/zqmillet/sphinx-plantuml/pull/4
       - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH python -m pip list -v
       - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH make docs-openapi