Upgrade ReadMe document to guide user to install libuv(1.39) in conda env on Windows platform (#45553)

Summary:
Fixes #{issue number}

Pull Request resolved: https://github.com/pytorch/pytorch/pull/45553

Reviewed By: SciPioneer

Differential Revision: D24017246

Pulled By: mrshenli

fbshipit-source-id: ec69f864a7acfbdddd60c3d2b442294ec3e34558