[Minor] Fix type annotation in fused moe (#3045)

Author: WoosukKwon

vllm/model_executor/layers/fused_moe/fused_moe.py

@@ -2,7 +2,7 @@
 import functools
 import json
 import os
-from typing import Any, Dict, Optional
+from typing import Any, Dict, Optional, Tuple
 
 import torch
 import triton
@@ -137,7 +137,7 @@ def fused_moe_kernel(
 
 def moe_align_block_size(
         topk_ids: torch.Tensor, block_size: int,
-        num_experts: int) -> (torch.Tensor, torch.Tensor, torch.Tensor):
+        num_experts: int) -> Tuple[torch.Tensor, torch.Tensor, torch.Tensor]:
     """
     Aligns the token distribution across experts to be compatible with block size for matrix multiplication.
 
@@ -185,7 +185,8 @@ def invoke_fused_moe_kernel(A: torch.Tensor, B: torch.Tensor, C: torch.Tensor,
                             sorted_token_ids: torch.Tensor,
                             expert_ids: torch.Tensor,
                             num_tokens_post_padded: torch.Tensor,
-                            mul_routed_weight: bool, top_k: int, config: dict):
+                            mul_routed_weight: bool, top_k: int,
+                            config: Dict[str, Any]) -> None:
     assert topk_weights.stride(1) == 1
     assert sorted_token_ids.stride(0) == 1