[DOCS] "GETTING STARTED WITH VMWARE" needs a improvement.

Description
URL: https://docs.saltproject.io/en/latest/topics/cloud/vmware.html needs improvement

• the VMware link under "image" is broken. the SDK link re-directs to a generic page.
• Please add an example of win_run_once and fix the description.

Suggested Fix
The valid SDK link for the image: https://vdc-download.vmware.com/vmwb-repository/dcr-public/da47f910-60ac-438b-8b9b-6122f4d14524/16b7274a-bf8b-4b4c-a05e-746f2aa93c8c/doc/vim.vm.GuestOsDescriptor.GuestOsIdentifier.html

win_run_once: this can only be done with customization: true. Also Please add clarity that the script that is to be executed must remain on the template.

syntax that worked for me:
win_run_once: 'powershell.exe c:\scripts\en.winrm.ps1'

There are certain tasks that can only take place with customization: true. Ie:

• setting up hostname
• setting up IP address
• setting up gateway
• Setting up DNS
• domain join (if invoking this via vmw customization API)
• GUI.Runonce
  It would be good to have this specified explicitly under customization: true

Type of documentation
salt.cloud documentation for VMware

Location or format of documentation
https://docs.saltproject.io/en/latest/topics/cloud/vmware.html

Additional context
the slack conversation here: https://vmware.slack.com/archives/C01CW4Q57BP/p1617954361137200

Open the VMware cloud documentation at topics/cloud/vmware.html and inspect the image and customization sections. Check the suggested VMware SDK link, document the win_run_once example and customization requirements, and verify that the page clearly covers the listed customization tasks and template-script requirement.