Add missing doc update for "database_roles" and "iam_email"

[schen59]

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sql: Add missing doc update for "database_roles" and "iam_email"

[github-actions]

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[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

google provider: Diff ( 1 file changed, 36 insertions(+))
google-beta provider: Diff ( 1 file changed, 36 insertions(+))