save improvements from Moura review

src/app/pages/events/edit-event/edit-event.component.ts

@@ -150,7 +150,9 @@ export class EventEditPage implements OnInit {
           buttons: ['OK']
         });
     
-        await alert.present();
+        setTimeout(()=>{
+          alert.dismiss();
+        }, 1500);
 
         this.router.navigate(['/home/events']);
       });  
@@ -169,13 +171,15 @@ export class EventEditPage implements OnInit {
 
      this.eventsService.editEvent(this.loadedEvent, 2, 3).subscribe(async () => 
       {
-        const alert = await this.alertController.create({
+       const alert = await this.alertController.create({
           cssClass: 'my-custom-class',
           header: 'Evento actualizado',
           buttons: ['OK']
         });
   
-        await alert.present();
+        setTimeout(()=>{
+          alert.dismiss();
+        }, 1500);
       });
     }
   }