Use text wrapping so it's scrollable in Qt 5.12

I don't know if it's really in Qt 5.12 or maybe it's the Ubuntu implementation or whatever. But this works for me now.

Contributes to issue CURA-6434.

plugins/SliceInfoPlugin/MoreInfoWindow.qml

@@ -90,6 +90,7 @@ Window
 
                 textArea.text: manager.getExampleData()
                 textArea.textFormat: Text.RichText
+                textArea.wrapMode: Text.Wrap
                 textArea.readOnly: true
             }
         }