Minor tox.ini fix

Author: kamwoods

tox.ini

@@ -16,7 +16,7 @@ deps =
   wheel
 commands =
   python -m build --no-isolation --outdir=dist --wheel
-  python -m pip install --no-index --find-links=dist libpff-python
+  python -m pip install --no-index --find-links=dist libpff-python-ratom
   python tests/runtests.py
 
 [testenv:auditwheel]