Add google workspace SSO setup notes
What does this MR do and why?
Describe in detail what your merge request does and why.
Add Google Workspace SSO setup notes and add a note to discard the warning about NameID format when verifiying SAMl configuration
Ticket : https://gitlab.zendesk.com/agent/tickets/291060 (Internal link)
How to set up and validate locally
Numbered steps to set up and validate the change are strongly suggested.