samples: Update Recognize.java (#1460)

Update comment to match correct audio encoding

Author: gogasca

speech/snippets/src/main/java/com/example/speech/Recognize.java

@@ -287,7 +287,7 @@ public static void asyncRecognizeWords(String gcsUri) throws Exception {
     // Instantiates a client with GOOGLE_APPLICATION_CREDENTIALS
     try (SpeechClient speech = SpeechClient.create()) {
 
-      // Configure remote file request for Linear16
+      // Configure remote file request for FLAC
       RecognitionConfig config =
           RecognitionConfig.newBuilder()
               .setEncoding(AudioEncoding.FLAC)
@@ -336,7 +336,7 @@ public static void asyncRecognizeGcs(String gcsUri) throws Exception {
     // Instantiates a client with GOOGLE_APPLICATION_CREDENTIALS
     try (SpeechClient speech = SpeechClient.create()) {
 
-      // Configure remote file request for Linear16
+      // Configure remote file request for FLAC
       RecognitionConfig config =
           RecognitionConfig.newBuilder()
               .setEncoding(AudioEncoding.FLAC)