[docs] Fix broken doc links for App namespaces (#4627)

* Fix broken doc links for App namespaces

* Update .changeset/young-horses-kick.md

Co-authored-by: Ignatius Bagus <[email protected]>

Author: CamWass

.changeset/young-horses-kick.md

@@ -0,0 +1,5 @@
+---
+'create-svelte': patch
+---
+
+Update broken documentation links for `App` namespaces

packages/create-svelte/templates/default/src/app.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="@sveltejs/kit" />
 
-// See https://kit.svelte.dev/docs/types#the-app-namespace
+// See https://kit.svelte.dev/docs/types#app
 // for information about these interfaces
 declare namespace App {
 	interface Locals {

packages/create-svelte/templates/skeleton/src/app.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="@sveltejs/kit" />
 
-// See https://kit.svelte.dev/docs/types#the-app-namespace
+// See https://kit.svelte.dev/docs/types#app
 // for information about these interfaces
 declare namespace App {
 	// interface Locals {}