Remove blank line in user-reported messages document

Removed unnecessary blank line before the 'Notify users from within the portal' section.

Author: chrisda

defender-office-365/submissions-admin-review-user-reported-messages.md

@@ -58,7 +58,6 @@ Admins can mark messages and notify users of review results only if the user [re
     > <sup>\*</sup> Microsoft strongly advocates for the principle of least privilege. Assigning accounts only the minimum permissions necessary to perform their tasks helps reduce security risks and strengthens your organization's overall protection. Global Administrator is a highly privileged role that you should limit to emergency scenarios or when you can't use a different role.
 
 - You need access to Exchange Online PowerShell. If your account doesn't have access to Exchange Online PowerShell, you get the following error: _Specify an email address in your domain_. For more information about enabling or disabling access to Exchange Online PowerShell, see [Enable or disable access to Exchange Online PowerShell](/powershell/exchange/disable-access-to-exchange-online-powershell).
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 ## Notify users from within the portal