Fix CI: update path after rename to openapi2cli

Co-authored-by: Aaron Levin <awlevin@comcast.net>

Author: king-olaf[bot]

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
           pip install -e ".[dev]"
       
       - name: Lint with ruff
-        run: ruff check api2cli/ tests/
+        run: ruff check openapi2cli/ tests/
 
       - name: Run unit tests
         run: pytest tests/ -v -m "not integration" --tb=short