docs: fix vue example

examples/nuxt-example/components/ui/alert/index.ts

@@ -0,0 +1,23 @@
+import { type VariantProps, cva } from 'class-variance-authority'
+
+export { default as Alert } from './Alert.vue'
+export { default as AlertTitle } from './AlertTitle.vue'
+export { default as AlertDescription } from './AlertDescription.vue'
+
+export const alertVariants = cva(
+  'relative w-full rounded-lg border px-4 py-3 text-sm [&>svg+div]:translate-y-[-3px] [&>svg]:absolute [&>svg]:left-4 [&>svg]:top-4 [&>svg]:text-foreground [&>svg~*]:pl-7',
+  {
+    variants: {
+      variant: {
+        default: 'bg-background text-foreground',
+        destructive:
+          'border-destructive/50 text-destructive dark:border-destructive [&>svg]:text-destructive',
+      },
+    },
+    defaultVariants: {
+      variant: 'default',
+    },
+  },
+)
+
+export type AlertVariants = VariantProps<typeof alertVariants>