docs: fix speech code for bug 16461337

Change-Id: Id2ab7852a7dbe9b91697e1ffd0ca1ba62144f875

Author: Robert Ly

docs/html/training/wearables/apps/voice.jd

@@ -263,12 +263,12 @@ private void displaySpeechRecognizer() {
 @Override
 protected void onActivityResult(int requestCode, int resultCode,
         Intent data) {
-    if (requestCode == SPEECH_REQUEST && resultCode == RESULT_OK) {
+    if (requestCode == SPEECH_REQUEST_CODE && resultCode == RESULT_OK) {
         List<String> results = data.getStringArrayListExtra(
                 RecognizerIntent.EXTRA_RESULTS);
         String spokenText = results.get(0);
         // Do something with spokenText
     }
     super.onActivityResult(requestCode, resultCode, data);
 }
-</pre>
+</pre>