Updated setup Azure doc following Slack post

[nataliefiann]

What are you changing in this pull request and why?

Checklist

• I have reviewed the Content style guide so my content adheres to these guidelines.
• The topic I'm writing about is for specific dbt version(s) and I have versioned it according to the version a whole page and/or version a block of content guidelines.
• I have added checklist item(s) to this list for anything anything that needs to happen before this PR is merged, such as "needs technical review" or "change base branch."

Following this Slack post: https://dbt-labs.slack.com/archives/C02NCQ9483C/p1726656354040079 noting an issue where customers who are using Azure AD to SSO to dbt Cloud and also to SSO to their MS tools, when users click on connect a user, the SSO flow makes it that they are not prompted for a user, and it uses their own use all the time. Updated steps provide a resolution for this

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Name	Status	Preview	Updated (UTC)
docs-getdbt-com	✅ Ready (Inspect)	Visit Preview	Sep 20, 2024 9:41am

[mirnawong1]

thanks @nataliefiann and left some suggestions. if @b-per has approved the content and adjusted flow, then this should be good to merge.