fix: update element's test flow

Author: MilagrosMarin

.github/workflows/test.yaml

@@ -8,8 +8,6 @@ on:
       - main
   workflow_dispatch:
 jobs:
-  devcontainer-build:
-    uses: datajoint/.github/.github/workflows/devcontainer-build.yaml@main
   tests:
     runs-on: ubuntu-latest
     strategy:
@@ -30,3 +28,4 @@ jobs:
         run: |
           python_version=${{matrix.py_ver}}
           black element_array_ephys --check --verbose --target-version py${python_version//.}
+          black notebooks --check --verbose --target-version py${python_version//.}