docs: fix type checking of component testing blocks

Author: danielroe

docs/1.getting-started/11.testing.md

@@ -161,6 +161,10 @@ export default defineVitestConfig({
 
 ```ts twoslash
 import { it, expect } from 'vitest'
+import type { Component } from 'vue'
+declare module '#components' {
+  export const SomeComponent: Component
+}
 // ---cut---
 // tests/components/SomeComponents.nuxt.spec.ts
 import { mountSuspended } from '@nuxt/test-utils/runtime'
@@ -207,6 +211,10 @@ Examples:
 
 ```ts twoslash
 import { it, expect } from 'vitest'
+import type { Component } from 'vue'
+declare module '#components' {
+  export const SomeComponent: Component
+}
 // ---cut---
 // tests/components/SomeComponents.nuxt.spec.ts
 import { renderSuspended } from '@nuxt/test-utils/runtime'