add desc of version params (PaddlePaddle#3929)

* add desc of version params

MANIFEST.in

@@ -5,5 +5,6 @@ recursive-include ppocr/utils *.txt utility.py logging.py network.py
 recursive-include ppocr/data *.py
 recursive-include ppocr/postprocess *.py
 recursive-include tools/infer *.py
+recursive-include tools __init__.py
 recursive-include ppocr/utils/e2e_utils *.py
 recursive-include ppstructure *.py

doc/doc_ch/whl.md

@@ -420,3 +420,5 @@ im_show.save('result.jpg')
 | cls | 前向时是否启动分类 (命令行模式下使用use_angle_cls控制前向是否启动分类) | FALSE |
 | show_log | 是否打印det和rec等信息 | FALSE |
 | type | 执行ocr或者表格结构化, 值可选['ocr','structure'] | ocr |
+| ocr_version | OCR模型版本，可选PP-OCRv2, PP-OCR。PP-OCRv2 目前仅支持中文的检测和识别模型，PP-OCR支持中文的检测，识别，多语种识别，方向分类器等模型 | PP-OCRv2 |
+| structure_version | 表格结构化模型版本，可选 STRUCTURE。STRUCTURE支持表格结构化模型 | STRUCTURE |

doc/doc_en/whl_en.md

@@ -366,4 +366,6 @@ im_show.save('result.jpg')
 | rec | Enable recognition when `ppocr.ocr` func exec | TRUE |
 | cls | Enable classification when `ppocr.ocr` func exec((Use use_angle_cls in command line mode to control whether to start classification in the forward direction) | FALSE |
 | show_log | Whether to print log in det and rec | FALSE |
-| type | Perform ocr or table structuring, the value is selected in ['ocr','structure'] | ocr |
+| type | Perform ocr or table structuring, the value is selected in ['ocr','structure'] | ocr |
+| ocr_version | OCR Model version number, the current model support list is as follows: PP-OCRv2 support Chinese detection and recognition model, PP-OCR support Chinese detection, recognition and direction classifier, multilingual recognition model | PP-OCRv2 |
+| structure_version | table structure Model version number, the current model support list is as follows: STRUCTURE support english table structure model | STRUCTURE |