Update app.py

app.py

@@ -137,7 +137,7 @@ def build_pdf_index():
             embeddings.extend(batch_embeddings)
 
             progress_bar.progress(min((i + batch_size) / total_docs, 1.0))
-                time.sleep(5)
+            time.sleep(5)
             progress_bar.empty()
 
         embeddings = np.array(embeddings)