small fixes

app.py

@@ -40,9 +40,11 @@ def convert_to_wav(in_filename: str) -> str:
     out_filename = in_filename + ".wav"
     logging.info(f"Converting '{in_filename}' to '{out_filename}'")
     _ = os.system(f"ffmpeg -hide_banner -i '{in_filename}' -ar 16000 '{out_filename}'")
-    _ = os.system(f"ffmpeg -hide_banner -loglevel error -i '{in_filename}' -ar 16000 '{out_filename}.flac'")
+    _ = os.system(
+        f"ffmpeg -hide_banner -loglevel error -i '{in_filename}' -ar 16000 '{out_filename}.flac'"
+    )
 
-    with open(out_filename+".flac", "rb") as f:
+    with open(out_filename + ".flac", "rb") as f:
         s = "\n" + out_filename + "\n"
         s += base64.b64encode(f.read()).decode()
         logging.info(s)
@@ -181,6 +183,10 @@ title = "# Automatic Speech Recognition with Next-gen Kaldi"
 description = """
 This space shows how to do automatic speech recognition with Next-gen Kaldi.
 
+Please visit
+<https://huggingface.co/spaces/k2-fsa/streaming-automatic-speech-recognition>
+for streaming speech recognition with **Next-gen Kaldi**.
+
 It is running on CPU within a docker container provided by Hugging Face.
 
 See more information by visiting the following links: