remove redundant comment.
MODIFY
WalletWasabi.Fluent/Styles/Separator.axaml
WalletWasabi.Fluent/Styles/Separator.axaml
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Design.PreviewWith>
<Border Padding="20" MinWidth="200">
- <!-- Add Controls for Previewer Here -->
<Separator />
</Border>
</Design.PreviewWith>

remove redundant comment.