fixed footnote

Author: Justinha

articles/active-directory/authentication/howto-mfaserver-deploy.md

@@ -53,7 +53,7 @@ Make sure the server that you're using for Azure Multi-Factor Authentication mee
 | Azure Multi-Factor Authentication Server Requirements | Description |
 |:--- |:--- |
 | Hardware |<li>200 MB of hard disk space</li><li>x32 or x64 capable processor</li><li>1 GB or greater RAM</li> |
-| Software |<li>Windows Server 2019<sup>1</sup</li><li>Windows Server 2016</li><li>Windows Server 2012 R2</li><li>Windows Server 2012</li><li>Windows Server 2008/R2 (with [ESU](/lifecycle/faq/extended-security-updates) only)</li><li>Windows 10</li><li>Windows 8.1, all editions</li><li>Windows 8, all editions</li><li>Windows 7, all editions (with [ESU](/lifecycle/faq/extended-security-updates) only)</li><li>Microsoft .NET 4.0 Framework</li><li>IIS 7.0 or greater if installing the user portal or web service SDK</li> |
+| Software |<li>Windows Server 2019<sup>1</sup></li><li>Windows Server 2016</li><li>Windows Server 2012 R2</li><li>Windows Server 2012</li><li>Windows Server 2008/R2 (with [ESU](/lifecycle/faq/extended-security-updates) only)</li><li>Windows 10</li><li>Windows 8.1, all editions</li><li>Windows 8, all editions</li><li>Windows 7, all editions (with [ESU](/lifecycle/faq/extended-security-updates) only)</li><li>Microsoft .NET 4.0 Framework</li><li>IIS 7.0 or greater if installing the user portal or web service SDK</li> |
 | Permissions | Domain Administrator or Enterprise Administrator account to register with Active Directory |
 
 <sup>1</sup>If Azure MFA Server fails to activate on an Azure VM that runs Windows Server 2019, try using another version of Windows Server.