docs: add instruction on how to use other modules in a module (#22081)

docs/2.guide/3.going-further/3.modules.md

@@ -411,6 +411,37 @@ export default defineNuxtModule({
 })
 ```
 
+#### Using Other Modules in Your Module
+
+If your module depends on other modules, you can add them by using Nuxt Kit's `installModule` utility. For example, if you wanted to use Nuxt Tailwind in your module, you could add it as below:
+
+```ts
+import { defineNuxtModule, createResolver, installModule } from '@nuxt/kit'
+
+export default defineNuxtModule<ModuleOptions>({  
+  async setup (options, nuxt) {
+    const { resolve } = createResolver(import.meta.url)
+
+    // We can inject our CSS file which includes Tailwind's directives
+    nuxt.options.css.push(resolve('./runtime/assets/styles.css'))
+
+    await installModule('@nuxtjs/tailwindcss', {
+      // module configuration
+      exposeConfig: true,
+      config: {
+        darkMode: 'class',
+        content: {
+          files: [
+            resolve('./runtime/components/**/*.{vue,mjs,ts}'),
+            resolve('./runtime/*.{mjs,js,ts}')
+          ]
+        }
+      }
+    })
+  }
+})
+```
+
 #### Using Hooks
 
 [Lifecycle hooks](/docs/guide/going-further/hooks) allow you to expand almost every aspect of Nuxt. Modules can hook to them programmatically or through the `hooks` map in their definition.