Fix typo in coverage in tests workflow

.github/workflows/tests.yaml

@@ -30,7 +30,7 @@ jobs:
     - name: Test with pytest
       shell: bash -el {0}
       run: |
-        pytest --color=yes --cov --cov-report=xml --cov-report=term_missing tests
+        pytest --color=yes --cov --cov-report=xml --cov-report=term-missing tests
     # Coverage should work out of the box for public repos. For private repos, more setup is likely required.
     - name: Coverage
       uses: codecov/codecov-action@v3