fix copy and pasta

Author: ocefpaf

pyproject.toml

@@ -144,7 +144,7 @@ python-build = "*"
 lint = "ruff check tests xarray_subset_grid"
 test = "pytest tests/"
 test_all = "pytest --online tests/"
-test_cov = "pixi run --environment testcov test_cov"
+test_cov = "pytest --cov=xarray_subset_grid tests"
 
 [tool.pixi.feature.examples.dependencies]
 matplotlib = "*"