fix(Speech to Text): Revise SpeechRecognitionAlternative model

Scripts/Services/SpeechToText/V1/Model/SpeechRecognitionAlternative.cs

@@ -42,14 +42,14 @@ public class SpeechRecognitionAlternative
         /// `[["hello",0.0,1.2],["world",1.2,2.5]]`. Timestamps are returned only for the best alternative.
         /// </summary>
         [JsonProperty("timestamps", NullValueHandling = NullValueHandling.Ignore)]
-        public List<string> Timestamps { get; set; }
+        public List<List<string>> Timestamps { get; set; }
         /// <summary>
         /// A confidence score for each word of the transcript as a list of lists. Each inner list consists of two
         /// elements: the word and its confidence score in the range of 0.0 to 1.0, for example:
         /// `[["hello",0.95],["world",0.866]]`. Confidence scores are returned only for the best alternative and only
         /// with results marked as final.
         /// </summary>
         [JsonProperty("word_confidence", NullValueHandling = NullValueHandling.Ignore)]
-        public List<string> WordConfidence { get; set; }
+        public List<List<string>> WordConfidence { get; set; }
     }
 }