docs: fix type definition (#5796)

unional · web-flow · commit 6625ec6751ac · 2024-12-30T15:53:04.000-06:00
diff --git a/docs/guide/expanding.md b/docs/guide/expanding.md
@@ -49,10 +49,10 @@ type Person = {
   id: number
   name: string
   age: number
-  children: Person[]
+  children?: Person[] | undefined
 }
 
-const data: Person =  [
+const data: Person[] =  [
   { id: 1, 
   name: 'John', 
   age: 30, 
