chore: (speech) update region tag setup in speech/profanityFilter.js (GoogleCloudPlatform#3971)

Co-authored-by: Jennifer Davis <sigje@google.com>

Author: hivanalejandro

speech/profanityFilter.js

@@ -15,6 +15,7 @@
 'use strict';
 
 function main(gcsUri) {
+ // [START speech_syncRecognizeWithProfanityFilter]
  // [START syncRecognizeWithProfanityFilter]
  // Filters profanity
 
@@ -54,6 +55,7 @@ function main(gcsUri) {
  }
  syncRecognizeWithProfanityFilter().catch(console.error);
  // [END syncRecognizeWithProfanityFilter]
+ // [END speech_syncRecognizeWithProfanityFilter]
 }
 
 main(...process.argv.slice(2));