Fix black action arguments

Author: oscargus

Diff for: {{cookiecutter.github_project_name}}/.github/workflows/lint.yml

@@ -14,7 +14,8 @@ jobs:
       - uses: actions/setup-python@v2
       - uses: psf/black@stable
         with:
-          args: ". --check"
+          options: "--check"
+          src: "."
       - name: docstrings
         run: |
           pip install flit