Replace Gradio deprecated methods in 3.mdx

Replace the deprecated methods by those in Gradio 5.13.2:

1. `gr.Textbox(type="number")` --> `gr.Number()`.
2. `gr.Audio` covers both microphone and file upload without specifying `source`.

chapters/en/chapter9/3.mdx

@@ -112,7 +112,7 @@ gr.Interface(
     [
         gr.Dropdown(notes, type="index"),
         gr.Slider(minimum=4, maximum=6, step=1),
-        gr.Textbox(type="number", value=1, label="Duration in seconds"),
+        gr.Number(value=1, label="Duration in seconds"),
     ],
     "audio",
 ).launch()
@@ -153,23 +153,14 @@ import gradio as gr
 model = pipeline("automatic-speech-recognition")
 
 
-def transcribe_audio(mic=None, file=None):
-    if mic is not None:
-        audio = mic
-    elif file is not None:
-        audio = file
-    else:
-        return "You must either provide a mic recording or a file"
+def transcribe_audio(audio):
     transcription = model(audio)["text"]
     return transcription
 
 
 gr.Interface(
     fn=transcribe_audio,
-    inputs=[
-        gr.Audio(source="microphone", type="filepath", optional=True),
-        gr.Audio(source="upload", type="filepath", optional=True),
-    ],
+    inputs=gr.Audio(type="filepath"),
     outputs="text",
 ).launch()
 ```
@@ -183,4 +174,4 @@ That's it! You can now use this interface to transcribe audio. Notice here that
 by passing in the `optional` parameter as `True`, we allow the user to either
 provide a microphone or an audio file (or neither, but that will return an error message).
 
-Keep going to see how to share your interface with others!
+Keep going to see how to share your interface with others!