Documentation update

[aleksei-zolotukhin]

Hello,

According to the PR #179, the app now supports Google Workspace. However, the documentation is missing the steps for configuring the app to work against Google Workspace. I tried to configure the app myself but did not succeed.

Could you please update the documentation so that users can use the app with Google Workspace?

Thank you in advance.

[ZJ-StratusFort]

This PR has google workspace documentation: #213