docs: update Long Audio capabilities to include SSML

Google APIs · copybara-github · commit d9eae9f02942 · 2024-08-19T08:40:11.000-07:00
PiperOrigin-RevId: 664823949
diff --git a/google/cloud/texttospeech/v1/cloud_tts_lrs.proto b/google/cloud/texttospeech/v1/cloud_tts_lrs.proto
@@ -60,7 +60,6 @@ message SynthesizeLongAudioRequest {
   string parent = 1;
 
   // Required. The Synthesizer requires either plain text or SSML as input.
-  // While Long Audio is in preview, SSML is temporarily unsupported.
   SynthesisInput input = 2 [(google.api.field_behavior) = REQUIRED];
 
   // Required. The configuration of the synthesized audio.
