[Docs] Add GPT2ForSequenceClassification to supported models in docs (#19932)

Signed-off-by: nie3e <adrcwiek@gmail.com>

docs/models/supported_models.md

@@ -445,7 +445,7 @@ Specified using `--task classify`.
 | Architecture                     | Models   | Example HF Models                      | [LoRA][lora-adapter]   | [PP][distributed-serving]   | [V1](gh-issue:8779)   |
 |----------------------------------|----------|----------------------------------------|------------------------|-----------------------------|-----------------------|
 | `JambaForSequenceClassification` | Jamba    | `ai21labs/Jamba-tiny-reward-dev`, etc. | ✅︎                     | ✅︎                          |                       |
-
+| `GPT2ForSequenceClassification`  | GPT2     | `nie3e/sentiment-polish-gpt2-small`    |                        |                             |                       |
 If your model is not in the above list, we will try to automatically convert the model using
 [as_classification_model][vllm.model_executor.models.adapters.as_classification_model]. By default, the class probabilities are extracted from the softmaxed hidden state corresponding to the last token.