update doc

deploy/cpp_infer/readme.md

@@ -350,6 +350,7 @@ More parameters are as follows,
 |table_model_dir|string|-|Address of table recognition inference model|
 |table_char_dict_path|string|../../ppocr/utils/dict/table_structure_dict.txt|dictionary file|
 |table_max_len|int|488|The size of the long side of the input image of the table recognition model, the final input image size of the network is（table_max_len，table_max_len）|
+|merge_no_span_structure|bool|true|Whether to merge <td> and </td> to <td></td|
 
 
 * Multi-language inference is also supported in PaddleOCR, you can refer to [recognition tutorial](../../doc/doc_en/recognition_en.md) for more supported languages and models in PaddleOCR. Specifically, if you want to infer using multi-language models, you just need to modify values of `rec_char_dict_path` and `rec_model_dir`.

deploy/cpp_infer/readme_ch.md

@@ -359,6 +359,7 @@ CUDNN_LIB_DIR=/your_cudnn_lib_dir
 |table_model_dir|string|-|表格识别模型inference model地址|
 |table_char_dict_path|string|../../ppocr/utils/dict/table_structure_dict.txt|字典文件|
 |table_max_len|int|488|表格识别模型输入图像长边大小，最终网络输入图像大小为（table_max_len，table_max_len）|
+|merge_no_span_structure|bool|true|是否合并<td> 和 </td> 为<td></td>|
 
 
 * PaddleOCR也支持多语言的预测，更多支持的语言和模型可以参考[识别文档](../../doc/doc_ch/recognition.md)中的多语言字典与模型部分，如果希望进行多语言预测，只需将修改`rec_char_dict_path`（字典文件路径）以及`rec_model_dir`（inference模型路径）字段即可。