Update app.py

app.py

@@ -21,7 +21,7 @@ layoutreader_model_dir = snapshot_download('hantian/layoutreader')
 os.system('cp magic-pdf.template.json ~/magic-pdf.json')
 os.system(f"sed -i 's|/tmp/models|{model_dir}/models|g' /home/user/magic-pdf.json")
 os.system(f"sed -i 's|/tmp/layoutreader|{layoutreader_model_dir}|g' /home/user/magic-pdf.json")
-os.system("sed -i 's|cpu|cuda|g' /root/magic-pdf.json")
+os.system("sed -i 's|cpu|cuda|g' /home/user/magic-pdf.json")
 
 os.system('cp -r paddleocr /home/user/.paddleocr')