Update event.tsx

Update popup confirmation message so the end user can get different messages when delete (All Recurrrences events) or (One Recurrence event)

samples/react-calendar/src/controls/Event/event.tsx

@@ -1191,7 +1191,7 @@ export class Event extends React.Component<IEventProps, IEventState> {
                   styles: { main: { maxWidth: 450 } }
                 }}
               >
-                <Label >{strings.ConfirmeDeleteMessage}</Label>
+                 <Label>{this.state.recurrenceSeriesEdited ? strings.ConfirmeDeleteAllRecurrrencesMessage : strings.ConfirmeDeleteOneRecurrenceMessage }</Label>
                 {
                   this.state.isDeleting &&
                   <Spinner size={SpinnerSize.medium} ariaLabel={strings.SpinnerDeletingLabel} />