New translations en.xaml (Vietnamese)

[ci skip]

Author: jjw24

Plugins/Flow.Launcher.Plugin.Calculator/Languages/vi.xaml

@@ -12,4 +12,5 @@
     <system:String x:Key="flowlauncher_plugin_calculator_decimal_seperator_comma">Dấu phẩy (,)</system:String>
     <system:String x:Key="flowlauncher_plugin_calculator_decimal_seperator_dot">dấu chấm (.)</system:String>
     <system:String x:Key="flowlauncher_plugin_calculator_max_decimal_places">Tối đa. chữ số thập phân</system:String>
+    <system:String x:Key="flowlauncher_plugin_calculator_failed_to_copy">Copy failed, please try later</system:String>
 </ResourceDictionary>