Fix CI workflow syntax

.github/workflows/avro-python.yaml

@@ -16,7 +16,7 @@ jobs:
       - name: flake8 Lint
         uses: py-actions/flake8@v2
         with:
-          path: "interface-gen"
+          path: "interface_gen"
           max-line-length: 100
   unit-tests:
     runs-on: ubuntu-latest
@@ -37,7 +37,5 @@ jobs:
       - name: Install dependencies
         working-directory: .
         run: pip install -r requirements.txt
-        with:
-          working-directory: .
       - name: Run Unit Tests
         run: python -m unittest *_test.py