fixups

Author: blink1073

{{cookiecutter.github_project_name}}/.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - uses: jupyterlab/maintainer-tools/.github/base-setup@v1
+      - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
 
       - name: Install dependencies
         run: |