fix tox.ini, doesn't work on Windows

Author: C-Achard

tox.ini

@@ -28,15 +28,15 @@ passenv =
     NUMPY_EXPERIMENTAL_ARRAY_FUNCTION
     PYVISTA_OFF_SCREEN
 deps =
-;    -r{toxinidir}\requirements.txt
-    pytest  # https://docs.pytest.org/en/latest/contents.html
-    pytest-cov  # https://pytest-cov.readthedocs.io/en/latest/
-    # you can remove these if you don't use them
-    napari
-    magicgui
-    pytest-qt
-    qtpy
-    pyqt5
-    opencv-python
+    -rrequirements.txt
+;    pytest  # https://docs.pytest.org/en/latest/contents.html
+;    pytest-cov  # https://pytest-cov.readthedocs.io/en/latest/
+;    # you can remove these if you don't use them
+;    napari
+;    magicgui
+;    pytest-qt
+;    qtpy
+;    pyqt5
+;    opencv-python
 
 commands = pytest -v --color=yes --cov=napari_cellseg_annotator --cov-report=xml