BUG: fix structure syntax

Author: bsipocz

.github/workflows/ci_tests_run_notebooks.yml

@@ -41,17 +41,17 @@ jobs:
             os: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548  # v6.1.0
-      with:
-        python-version: ${{ matrix.python-version }}
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548  # v6.1.0
+        with:
+            python-version: ${{ matrix.python-version }}
 
-    - name: Install dependencies
-      run: python -m pip install --upgrade tox
+      - name: Install dependencies
+        run: python -m pip install --upgrade tox
 
-    - name: Test with tox
-      run: tox ${{ matrix.toxargs }} -e ${{ matrix.toxenv }} -- ${{ matrix.toxposargs }}
+      - name: Test with tox
+        run: tox ${{ matrix.toxargs }} -e ${{ matrix.toxenv }} -- ${{ matrix.toxposargs }}
 
 
   gha_buildhtml: