fix ts type

Author: GoodDayForSurf

apps/demos/Demos/Stepper/Overview/Vue/data.ts

@@ -29,7 +29,7 @@ export const steps = [
   },
 ];
 
-export const orientations: {text: string, value: Orientation}[] = [
+export const orientations: Array<{text: string; value: Orientation}> = [
   { text: 'Horizontal', value: 'horizontal' },
   { text: 'Vertical', value: 'vertical' },
 ];