Clarify Teams protection policy rule details

Author: chrisda

defender-office-365/mdo-support-teams-about.md

@@ -83,7 +83,7 @@ If you'd rather use [Exchange Online PowerShell](/powershell/exchange/connect-to
 - There's only one Teams protection policy in an organization. By default, that policy is named Teams Protection Policy.
 - Using the **New-TeamsProtectionPolicy** cmdlet is meaningful only if there's no Teams protection policy in the organization (the **Get-TeamsProtectionPolicy** cmdlet returns nothing). You can run the cmdlet without error, but no new Teams protection policies are created if one already exists.
 - You can't remove an existing Teams protection policy or Teams protection policy rule (there's no **Remove-TeamsProtectionPolicy** or **Remove-TeamsProtectionPolicyRule** cmdlet).
-- By default, there's is already a Teams protection policy rule (the **Get-TeamsProtectionPolicyRule** cmdlet can provide the details). You can use either the Defender portal or the **Set-TeamsProtectionPolicyRule** cmdlet to modify the quarantine policies or exceptions for ZAP for Teams in the Defender portal. 
+- By default, there's a Teams protection policy rule named Teams Protection Policy Rule in an organization as returned by the **Get-TeamsProtectionPolicyRule** cmdlet. You can use the Defender portal or the **Set-TeamsProtectionPolicyRule** cmdlet to modify the quarantine policies or exceptions for ZAP for Teams.
 
 #### Use PowerShell to view the Teams protection policy and Teams protection policy rule