Update "Start developing PUMI on Windows" docs

[khoffschlag]

Improvement #1:

"The Docker platform runs natively on Linux, so this is the first requirement to install Docker in Windows."

Before installing Docker Desktop, WSL must already be installed, but the documentation says to install Docker Desktop first and then WSL.

Improvement #2:

Some of the commands are wrong. Some of the commands use only one hyphen where two should be used.
For example, the command "wsl -set-default-version 2" should be "wsl --set-default-version 2".

[khoffschlag]

Also there is no need to run "wsl --install" before running "wsl --install -d Ubuntu-22.04".

But before running these commands the user might have to activate the Windows Features for VM and WSL support.