fix .coveragerc

.github/workflows/ci.yaml

@@ -56,7 +56,8 @@ jobs:
         run: |
           pip install pytest pytest-cov
           touch .coveragerc
-          echo $"[run]\nrelative_files = True" > .coveragerc
+          echo "[run]" > .coveragerc
+          echo "relative_files = True" >> .coveragerc
           pytest --cov="rendercv" tests/
           mv .coverage .coverage.${{ matrix.python-version }}.${{ matrix.os }}
 
@@ -91,7 +92,8 @@ jobs:
           pip install coverage
           ls -la coverage
           touch .coveragerc
-          echo $"[run]\nrelative_files = True" > .coveragerc
+          echo "[run]" > .coveragerc
+          echo "relative_files = True" >> .coveragerc
           coverage combine coverage
           coverage report
           coverage html --show-contexts --title "RenderCV coverage for ${{ github.sha }}"