Support linking to any relative docs page (ex. /customization)

src/routes/docs/+layout.svelte

@@ -28,6 +28,7 @@
   import ViewSourceButton from '$docs/ViewSourceButton.svelte';
   import { xlScreen } from '$lib/stores/matchMedia';
   import { cls } from '$lib/utils/styles';
+  import { toTitleCase } from '$lib/utils/string';
 
   $: [path, type, name] = $page.url.pathname.match('.*/(.*)/(.*)') ?? [];
   $: title = $page.data.meta?.title ?? name;
@@ -59,6 +60,8 @@
       } else {
         return { type: 'website', name: url, url };
       }
+    } else if (r.startsWith('/')) {
+      return { type: 'docs', name: toTitleCase(r.slice(1)), url: r };
     } else {
       const [type, name] = r.split('/');
       return { type, name, url: `/docs/${type}/${name}` };

src/routes/docs/components/Theme/+page.ts

@@ -8,7 +8,9 @@ export async function load() {
       api,
       source,
       pageSource,
-      description: 'Create theme context as component.  Typically `createTheme()` is used directly',
+      description:
+        'Create theme context as a component.  Useful to scope theme within a component tree, although typically `createTheme()` is used directly',
+      related: ['/customization'],
     },
   };
 }