fix the result error

Base on the PaddleOCR example, the result should be change the result[0].
https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.6/doc/doc_en/quickstart_en.md#22-use-by-code

app.py

@@ -12,6 +12,7 @@ def inference(img, lang):
     ocr = PaddleOCR(use_angle_cls=True, lang=lang,use_gpu=False)
     img_path = img.name
     result = ocr.ocr(img_path, cls=True)
+    result = result[0]
     image = Image.open(img_path).convert('RGB')
     boxes = [line[0] for line in result]
     txts = [line[1][0] for line in result]