Fix comment in ValidateTextAd code example (#405)

Author: PierrickVoulet

google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/ValidateTextAd.java

@@ -146,9 +146,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long a
       System.out.println("There were validation error(s) while adding expanded text ad.");
 
       if (e.getGoogleAdsFailure() != null) {
-        // Note: Depending on the ad type, you may get back policy violation errors as
-        // either PolicyFindingError or PolicyViolationError. ExpandedTextAds return
-        // errors as PolicyFindingError, so only this case is illustrated here. See
+        // Note: Policy violation errors are returned as PolicyFindingErrors. See
         // https://developers.google.com/google-ads/api/docs/policy-exemption/overview
         // for additional details.
         List<GoogleAdsError> policyFindingErrors =