[Model] Support Qwen3-TTS model series (#895)

Signed-off-by: Gaohan123 <hgaoaf@connect.ust.hk>

docs/user_guide/examples/online_serving/text_to_image.md

@@ -119,6 +119,7 @@ Use `extra_body` to pass generation parameters:
 | `seed`                   | int   | None    | Random seed (reproducible)     |
 | `negative_prompt`        | str   | None    | Negative prompt                |
 | `num_outputs_per_prompt` | int   | 1       | Number of images to generate   |
+| `--cfg-parallel-size`.   | int   | 1       | Number of GPUs for CFG parallelism |
 
 ## Response Format