Update doc-builder push command to use env variable

Author: paulinebm

.github/workflows/doc-build.yml

@@ -52,10 +52,12 @@ jobs:
 
       - name: Make documentation
         shell: bash
+        env:
+          HF_DOC_BUILD_PUSH: ${{ secrets.HF_DOC_BUILD_PUSH }}
         run: |
           doc-builder notebook-to-mdx examples/ --output_dir docs/source/howto/ --open_notebook_prefix https://colab.research.google.com/github/huggingface/optimum-tpu/blob/main
           python docs/scripts/auto-generate-examples.py
           doc-builder build optimum.tpu docs/source/ --repo_name optimum-tpu --build_dir tpu-doc-build/ --version ${{ env.VERSION }} --version_tag_suffix "" --html --clean
           cd tpu-doc-build/
           mv optimum.tpu optimum-tpu
-          doc-builder push optimum-tpu --doc_build_repo_id "hf-doc-build/doc-build" --token "${{ secrets.HF_DOC_BUILD_PUSH }}" --commit_msg "Updated with commit $COMMIT_SHA See: https://github.com/huggingface/optimum-tpu/commit/$COMMIT_SHA" --n_retries 5
+          doc-builder push optimum-tpu --doc_build_repo_id "hf-doc-build/doc-build" --token "$HF_DOC_BUILD_PUSH" --commit_msg "Updated with commit $COMMIT_SHA See: https://github.com/huggingface/optimum-tpu/commit/$COMMIT_SHA" --n_retries 5