Try to use upt to date notebook in notebooks folder, rather than one in tests folder

Author: mcbarton

test/test_xcpp_kernel.py

@@ -141,8 +141,8 @@ class XCppNotebookTests(unittest.TestCase):
         def test_notebooks(self):
             for name in self.notebook_names:
 
-                inp = f'Notebooks/{name}.ipynb'
-                out = f'Notebooks/{name}_output.ipynb'
+                inp = f'../notebooks/{name}.ipynb'
+                out = f'../notebooks/{name}_output.ipynb'
 
                 with open(inp) as f:
                     input_nb = nbformat.read(f, as_version=4)
@@ -187,4 +187,4 @@ class XCppTests2(jupyter_kernel_test.KernelTests):
 
 
 if __name__ == '__main__':
-    unittest.main()
+    unittest.main()