Update app.py

app.py

@@ -495,7 +495,7 @@ def process_pdf_tab(pdf_file, max_pages, voice):
         def process_page_sync(page_num, page_text):
             async def run_async_audio(): return await audio_processor.create_audio(page_text, voice)
             try: audio_path = asyncio.run(run_async_audio()) # Use asyncio.run in thread
-                 if audio_path:
+                if audio_path:
                       with results_lock: audios[page_num] = audio_path
             except Exception as page_e: print(f"❌ Err process page {page_num+1}: {page_e}")