Add discrete qauntum walk on lattices with correct file name in test

Author: RomiLevy-Classiq

tests/notebooks/test_discrete_time_quantum_walk.py

@@ -6,7 +6,7 @@
 from testbook.client import TestbookNotebookClient
 
 
-@wrap_testbook("discrete-time_quantum_walk", timeout_seconds=2000)
+@wrap_testbook("discrete_time_quantum_walk", timeout_seconds=2000)
 def test_notebook(tb: TestbookNotebookClient) -> None:
     # test quantum programs
     validate_quantum_program_size(