Update documentation for installing CVAT on Windows

[BaoZhengG]

Hi @nmanovic ,

Thanks for updating the documentation on how to use CVAT on WIndows Home. Currently, after updating the docker desktop application to the latest version, I am able to execute docker command via the command prompt provided on Windows, but when I run the command winpty docker exec -it cvat -ic 'python3 ~/manage.py createsuperuser' it throws the following error saying 'winpty' is not recognized as an internal or external command, operable program or batch file.`

So I tried running just `docker exec -it cvat -ic 'python3 ~/manage.py createsuperuser'
This command worked initially but later threw this error.

setupvars.sh] OpenVINO environment initialized
manage.py: unexpected EOF while looking for matching `''
manage.py: syntax error: unexpected end of file

Could you please take a look at this and update the documentation?
Thanks :)

Originally posted by @kaustubhharapanahalli in #1536 (comment)

[BaoZhengG]

docker exec -it cvat -ic 'python3 ~/manage.py createsuperuser

[nmanovic]

@BaoZhengG , do you think you can help us and contribute? Just prepare a PR for documentation. It should be more or less easy to do.

[kaustubhharapanahalli]

Hi @BaoZhengG winpty works only on git bash, if you not using git bash, you use it without winpty

[nmanovic]

@kaustubhharapanahalli , thanks for your help! It looks like the question is answered. I will close the issue.