[V1][Minor] fix comments (#15392)

Signed-off-by: chenjincong <chenjincong@baidu.com>
Signed-off-by: Chen-0210 <chenjincong11@gmail.com>
Co-authored-by: chenjincong <chenjincong@baidu.com>

vllm/v1/sample/sampler.py

@@ -137,7 +137,7 @@ class Sampler(nn.Module):
         Gather logprobs for topk and sampled/prompt token.
 
         Args:
-          logits: (num tokens) x (vocab) tensor
+          logprobs: (num tokens) x (vocab) tensor
           num_logprobs: minimum number of logprobs to
                         retain per token
           token_ids: prompt tokens (if prompt logprobs)