Fix paligemma warning message (huggingface#35486)

fix log input

src/transformers/models/paligemma/modeling_paligemma.py

@@ -519,7 +519,7 @@ def forward(
         # mask out pad-token-ids in labels for BC
         if labels is not None and self.pad_token_id in labels:
             logger.warning_once(
-                "`labels` contains `pad_token_id` which will be masked with `config.ignore_index`. ",
+                "`labels` contains `pad_token_id` which will be masked with `config.ignore_index`. "
                 "You have to mask out `pad_token_id` when preparing `labels`, this behavior will be removed in v.4.46.",
             )
             labels = torch.where(input_ids == self.pad_token_id, self.config.ignore_index, labels)