[Xamarin] Label Multi Binding 처리하기

<Label>     <Label.FormattedText>         <FormattedString>             <FormattedString.Spans>                 <Span Text="("/>                 <Span Text="{Binding MainNotice.created_at}"/>                 <Span Text=") "/>                 <Span Text="{Binding MainNotice.title}" />             </FormattedString.Spans>         </FormattedString>     </Label.FormattedText> </Label>