Updated Signing.props to add Microsoft400 for fonts

Author: rmarinho

eng/Signing.props

@@ -29,7 +29,7 @@
     <FileExtensionSignInfo Update=".nupkg" CertificateName="NuGet" />
     <FileExtensionSignInfo Update=".zip" CertificateName="None" />
     <FileExtensionSignInfo Include=".msi" CertificateName="MicrosoftDotNet500" />
-    <FileExtensionSignInfo Include=".ttf" CertificateName="None" />
+    <FileExtensionSignInfo Include=".ttf" CertificateName="Microsoft400" />
   </ItemGroup>
 
   <ItemGroup>