fix(docs): use explicit shelve config as primary example

Author: onmax

docs/3.integrations/1.index.md

@@ -28,7 +28,10 @@ Fetch secrets from [Shelve](https://shelve.cloud) and inject them into your runt
 export default defineNuxtConfig({
   safeRuntimeConfig: {
     $schema: runtimeConfigSchema,
-    shelve: true, // auto-detect from shelve.json
+    shelve: {
+      project: 'my-project',
+      slug: 'my-team',
+    },
   },
 })
 ```

docs/package.json

@@ -1 +1 @@
-{ "type": "module", "private": true, "scripts": { "build": "undocs build", "dev": "undocs dev" }, "devDependencies": { "undocs": "^0.4.10" } }
+{ "type": "module", "private": true, "scripts": { "build": "undocs build", "dev": "undocs dev" }, "devDependencies": { "undocs": "catalog:default" } }