Updated Angular Listbox getting started sample#1

VenkateshwaranSaravanakumar merged 3 commits intomasterSyncfusionExamples/getting-started-with-the-angular-listbox-component:masterfrom

888861-AngListBoxGSSyncfusionExamples/getting-started-with-the-angular-listbox-component:888861-AngListBoxGSCopy head branch name to clipboard