Improve copy-to-clipboard

apps/client/src/app/components/user-account-membership/user-account-membership.component.ts

@@ -147,7 +147,7 @@ export class GfUserAccountMembershipComponent {
           .subscribe(({ apiKey }) => {
             this.notificationService.alert({
               copyValue: apiKey,
-              discardLabel: $localize`Okay`,
+              discardLabel: $localize`Close`,
               message: $localize`Set this API key in your self-hosted environment:`,
               title: $localize`Ghostfolio Premium Data Provider API Key`
             });