Update nvfuserex_impl.py

fix type hint

Author: crcrpar

thunder/executors/nvfuserex_impl.py

@@ -292,7 +292,7 @@ def compute_symbolic_shape(shape: torch.Size | Sequence[int]) -> tuple[int, ...]
 
 def compute_contiguity(
     shape: torch.Size | Sequence[int], stride: Sequence[int]
-) -> tuple([tuple[bool, ...], tuple[int, ...]]):
+) -> tuple[[tuple[bool, ...], tuple[int, ...]]]:
     """
     Computes the contiguity and stride_order of a tensor using nvFuser's notion.