Fix escaping

Author: znicholls

.github/workflows/ci.yaml

@@ -126,7 +126,7 @@ jobs:
       - name: Run tests
         run: |
           echo $CI
-          ls C:\ProgramData\mingw64\mingw64\bin
+          ls C:\\ProgramData\\mingw64\\mingw64\\bin
           COV_DIR=`uv run --no-sync python -c 'from pathlib import  Path; import example_fgen_basic; print(Path(example_fgen_basic.__file__).parent)'`
           uv run --no-sync pytest -r a -v tests src --doctest-modules --doctest-report ndiff --cov=${COV_DIR} --cov-report=term-missing --cov-report=xml
           uv run --no-sync coverage report