[V1] Logits processor docs (#22919)

Signed-off-by: Andrew Feldman <afeldman@redhat.com>
Signed-off-by: afeldman-nm <156691304+afeldman-nm@users.noreply.github.com>
Co-authored-by: Joseph Marinier <Joseph.Marinier@gmail.com>

vllm/v1/sample/logits_processor/interface.py

@@ -21,6 +21,9 @@ class MoveDirectionality(Enum):
     SWAP = auto()
 
 
+# Batch indices of any removed requests.
+RemovedRequest = int
+
 # (index, params, prompt_tok_ids, output_tok_ids) tuples for new
 # requests added to the batch.
 AddedRequest = tuple[int, SamplingParams, list[int], list[int]]
@@ -29,9 +32,6 @@ AddedRequest = tuple[int, SamplingParams, list[int], list[int]]
 # one-way moves or two-way swaps of requests in batch
 MovedRequest = tuple[int, int, MoveDirectionality]
 
-# Batch indices of any removed requests.
-RemovedRequest = int
-
 
 @dataclass(frozen=True)
 class BatchUpdate: