Errors in the Install Instruction

[zhiyuan-yang]

Thanks for the amazing mmtracking framework, however, I find some minor errors in the install instructions. In the instruction, the
example of MOT demo is

python demo/demo_mot_vis.py
configs/mot/deepsort/deepsort_faster-rcnn-r50-fpn_8xb2-4e_mot17halftrain_test-mot17halfval.py
--input demo/demo.mp4
--output mot.mp4

which is incompatitable to the mmtracking file. The correct one should be

python demo/demo_mot_vis.py
configs/mot/deepsort/deepsort_faster-rcnn_r50_fpn_8xb2-4e_mot17halftrain_test-mot17halfval.py
--input demo/demo.mp4
--output mot.mp4

[tchen0623]

I meet the same problem, it seems that they did not update their installation document yet.