correct dict error

app.py

@@ -334,7 +334,7 @@ def speech_to_text(Filename_Audio_input_single):
 
         response = requests.post(endpoint, headers=headers, data=open(Filename_Audio_input_single, "rb"))
         print("Speech to Text Raw: ", response.text)
-        text_from_audio = response.text['DisplayText']
+        text_from_audio = response.text('DisplayText')
         print("Speech to Text: ", text_from_audio)
         return text_from_audio
     except requests.exceptions.RequestException as e: