corrected Icon Name

Author: manojSF3414

Xamarin/Pdf-Viewer/Popup-Annotation.md

@@ -222,7 +222,7 @@ pdfViewer.AnnotationSettings.Popup.Icon = PopupIcon.Note;
 {% endhighlight %}
 {% endtabs %}
 
-N>Unsupported popup annotation icons will be rendered as the NewParagraph icon.
+N>Unsupported popup annotation icons will be rendered as the Comment icon.
 
 ### Changing the properties of a selected popup