Pre-load Docs

frontend/src/app/app-routing.module.ts

@@ -115,7 +115,8 @@ let routes: Routes = [
           },
           {
             path: 'docs',
-            loadChildren: () => import('./docs/docs.module').then(m => m.DocsModule)
+            loadChildren: () => import('./docs/docs.module').then(m => m.DocsModule),
+            data: { preload: true },
           },
           {
             path: 'api',