Update docgen.yml

Author: narendasan

.github/workflows/docgen.yml

@@ -80,7 +80,7 @@ jobs:
           export PYENV_ROOT="/opt/circleci/.pyenv"
           export PATH="$PYENV_ROOT/shims:$PYENV_ROOT/bin:$PATH"
           pyenv global 3.9.4
-          python3 -m pip install -e .
+          python3 setup.py install
           cd ..
       - name: Generate New Docs
         run: |