zhengchun/PaddleX: https://github.com/PaddlePaddle/PaddleX.git @ 7226c36070a49eb394c927bb9928f6eee58c25e3

liuhongen1234567 7226c36070 update formula pipe doc (#2950)		10 mesiacov pred
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video_classification.en.md	87bbbe4d53 add english docs (#2909)	10 mesiacov pred
video_classification.md	7226c36070 update formula pipe doc (#2950)	10 mesiacov pred
video_detection.en.md	8922f898dc replace train config path for all docs (#2937)	10 mesiacov pred
video_detection.md	137af2a379 add_doc_preprocess_cli_args (#2936)	10 mesiacov pred