update app description

app.py

@@ -229,10 +229,20 @@ for streaming speech recognition with **Next-gen Kaldi** using WebAssembly.
 
 It is running on CPU within a docker container provided by Hugging Face.
 
+Please input audio files less than 30 seconds in this space.
+
+Please see <https://huggingface.co/spaces/k2-fsa/generate-subtitles-for-videos>
+if you want to try files longer than 30 seconds.
+
+For text to speech, please see
+<https://huggingface.co/spaces/k2-fsa/text-to-speech>
+
 See more information by visiting the following links:
 
 - <https://github.com/k2-fsa/icefall>
 - <https://github.com/k2-fsa/sherpa>
+- <https://github.com/k2-fsa/sherpa-onnx>
+- <https://github.com/k2-fsa/sherpa-ncnn>
 - <https://github.com/k2-fsa/k2>
 - <https://github.com/lhotse-speech/lhotse>