[Bugfix][VLM] Fix incompatibility between #7902 and #7230 (#7948)

vllm/model_executor/models/blip2.py

@@ -40,13 +40,13 @@ BLIP2_IMAGE_TOKEN_ID = 50265
 class Blip2ImagePixelInputs(TypedDict):
     type: Literal["pixel_values"]
     data: torch.Tensor
-    """Shape: (batch_size, num_channels, height, width)"""
+    """Shape: `(batch_size * num_images, num_channels, height, width)`"""
 
 
 class Blip2ImageEmbeddingInputs(TypedDict):
     type: Literal["image_embeds"]
     data: torch.Tensor
-    """Shape: `(batch_size, image_feature_size, hidden_size)`
+    """Shape: `(batch_size * num_images, image_feature_size, hidden_size)`
 
     `hidden_size` must match the hidden size of language model backbone.
     """