Update app.py

app.py

@@ -158,7 +158,7 @@ class TTSDatasetCollector:
         return f"<div style='{font_css}'>{text}</div>"
 
 
-def generate_filenames(self, dataset_name: str, speaker_id: str) -> Tuple[str, str]:
+    def generate_filenames(self, dataset_name: str, speaker_id: str) -> Tuple[str, str]:
         """Generate unique filenames for audio and text files"""
         timestamp = datetime.now().strftime("%Y%m%d%H%M%S")
         sentence_id = f"{self.current_index+1:04d}"