samples: Add automatic punctuation to video speech transcription (#1165)

Author: nnegrey

video/src/main/java/com/example/video/Detect.java

@@ -84,6 +84,7 @@ public static void speechTranscription(String gcsUri) throws Exception {
       // Set the language code
       SpeechTranscriptionConfig config = SpeechTranscriptionConfig.newBuilder()
           .setLanguageCode("en-US")
+          .setEnableAutomaticPunctuation(true)
           .build();
 
       // Set the video context with the above configuration