Update on "Fixing doc build workflow"

Fixing the issue [mentioned here](#290 (comment)).

I have ran it on my fork and the build worked:
https://github.com/NivekT/data/actions/runs/2023027716

Differential Revision: [D35048050](https://our.internmc.facebook.com/intern/diff/D35048050)

[ghstack-poisoned]

Author: NivekT

.github/workflows/docs.yml

@@ -20,8 +20,8 @@ jobs:
           python3 -m pip install setuptools
           python3 -m pip install --pre torch -f https://download.pytorch.org/whl/nightly/cpu/torch_nightly.html
           python3 -m pip install matplotlib
-          python3 -m pip install -r https://github.com/raw/pytorch/data/main/requirements.txt
-          python3 -m pip install --no-build-isolation git+https://github.com/pytorch/data
+          python3 -m pip install -r requirements.txt
+          python3 setup.py install
           sudo apt-get install -y yarn
       - name: Check env
         run: echo `which spinx-build`