Fix docs pipeline by specifying fetch-depth: 0 (#4)

.github/workflows/docs.yml

@@ -11,6 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
       - uses: actions/setup-python@v4
       - run: pip install --upgrade pip && pip install -r requirements/requirements-dev.txt
       - run: git config user.name 'github-actions[bot]' && git config user.email 'github-actions[bot]@users.noreply.github.com'