docs(style-guide): create a route redirection

closes #1857

Author: Foxandxss

public/docs/_examples/style-guide/ts/app/app.routes.ts

@@ -28,6 +28,7 @@ import { AppComponent as S0704 } from '../07-04/app';
 import { AppComponent as S0901 } from '../09-01/app';
 
 const routes: RouterConfig = [
+  { path: '', redirectTo: '/01-01', pathMatch: 'full' },
   { path: '01-01', component: S0101 },
   { path: '02-07', component: S0207 },
   { path: '02-08', component: S0208 },