[Bugfix][Doc]Specify Qwen3-TTS model name for each task type (#1036)

Signed-off-by: Kyle Huang <yellowsea@gmail.com>

examples/online_serving/qwen3_tts/README.md

@@ -41,12 +41,14 @@ python openai_speech_client.py \
 
 # VoiceDesign: Describe the voice style
 python openai_speech_client.py \
+    --model Qwen/Qwen3-TTS-12Hz-1.7B-VoiceDesign \
     --task-type VoiceDesign \
     --text "哥哥，你回来啦" \
     --instructions "体现撒娇稚嫩的萝莉女声，音调偏高"
 
 # Base: Voice cloning
 python openai_speech_client.py \
+    --model Qwen/Qwen3-TTS-12Hz-1.7B-Base \
     --task-type Base \
     --text "Hello, this is a cloned voice" \
     --ref-audio /path/to/reference.wav \

examples/online_serving/qwen3_tts/openai_speech_client.py

@@ -90,6 +90,7 @@ def run_tts_generation(args) -> None:
     if args.x_vector_only:
         payload["x_vector_only_mode"] = True
 
+    print(f"Model: {args.model}")
     print(f"Task type: {args.task_type or 'CustomVoice'}")
     print(f"Text: {args.text}")
     print(f"Voice: {args.voice}")