Fix SpeechT5 docs

docs/source/en/model_doc/speecht5.md

@@ -71,7 +71,7 @@ This model was contributed by [Matthijs](https://huggingface.co/Matthijs). The o
 
 [[autodoc]] SpeechT5ForTextToSpeech
     - forward
-    - generate
+    - generate_speech
 
 ## SpeechT5ForSpeechToSpeech
 

src/transformers/models/speecht5/modeling_speecht5.py

@@ -2717,7 +2717,7 @@ class SpeechT5ForTextToSpeech(SpeechT5PreTrainedModel):
         >>> set_seed(555)  # make deterministic
 
         >>> # generate speech
-        >>> speech = model.generate(inputs["input_ids"], speaker_embeddings, vocoder=vocoder)
+        >>> speech = model.generate_speech(inputs["input_ids"], speaker_embeddings, vocoder=vocoder)
         >>> speech.shape
         torch.Size([15872])
         ```