Fix typo in nightly m1 ref (#2474)

Summary:
Fix typo in nightly m1 ref
See: https://github.com/pytorch/vision/pull/6158

Pull Request resolved: https://github.com/pytorch/audio/pull/2474

Reviewed By: malfet, mthrok

Differential Revision: D37117637

Pulled By: atalman

fbshipit-source-id: 2a8f7b5bf3506f2a53884424799919137870a0ad

.github/workflows/build-m1-binaries.yml

@@ -70,13 +70,13 @@ jobs:
           conda run --cwd /tmp -p ${ENV_NAME} python3 -c "import torch;import torchaudio;torchaudio.set_audio_backend('sox_io')"
           conda env remove -p ${ENV_NAME}
       - name: Upload wheel to GitHub
-        if: ${{ github.event_name == 'push' && (github.event.ref == 'ref/heads/nightly' || startsWith(github.event.ref, 'refs/tags/')) }}
+        if: ${{ github.event_name == 'push' && (github.event.ref == 'refs/heads/nightly' || startsWith(github.event.ref, 'refs/tags/')) }}
         uses: actions/upload-artifact@v3
         with:
           name: torchaudio-py${{ matrix.py_vers }}-macos11-m1
           path: dist/
       - name: Upload wheel to S3
-        if: ${{ github.event_name == 'push' && (github.event.ref == 'ref/heads/nightly' || startsWith(github.event.ref, 'refs/tags/')) }}
+        if: ${{ github.event_name == 'push' && (github.event.ref == 'refs/heads/nightly' || startsWith(github.event.ref, 'refs/tags/')) }}
         shell: arch -arch arm64 bash {0}
         env:
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_PYTORCH_UPLOADER_ACCESS_KEY_ID }}