Update documentation for initial configuration for Windows environment. Fixed minor bugs in GitHub's markdown format.
Update documentation for initial configuration for Windows environment. Fixed minor bugs in GitHub's markdown format.

QingChenmsft/azure-cli,yugangw-msft/azure-cli,yugangw-msft/azure-cli,yugangw-msft/azure-cli,BurtBiel/azure-cli,samedder/azure-cli,QingChenmsft/azure-cli,QingChenmsft/azure-cli,samedder/azure-cli,BurtBiel/azure-cli,yugangw-msft/azure-cli,yugangw-msft/azure-cli,samedder/azure-cli,samedder/azure-cli,yugangw-msft/azure-cli,QingChenmsft/azure-cli